Games like Ad Infinitum on Steam

For those who prefer not to search, lists of the most played, top deals and best free games like Ad Infinitum are available at the bottom of the page.

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Depth

Play as a shark or a diver in a dark aquatic world and overcome your enemies by employing cunning, teamwork, and stealth. Depth blends tension and visceral action as you team up against AI or be matched with other players in heart pounding combat.

Similarity 66%
Price 16.99€
Rating 8.6
Release 03 Nov 2014

Psychopomp GOLD

Psychopomp is BACK. The catacombs stretch down farther than ever before. Your entire life has been a lie. Delve into the depths, and discover the horrors that lie below. More realms, more modes, more secrets. An ancient voice calls to you from the center of the earth. Will you answer it?

Similarity 66%
Price 8.79€
Rating 9.4
Release 24 Oct 2024

Amanda the Adventurer 2

In Amanda the Adventurer 2, the story continues as Riley encounters a mysterious masked figure after destroying the TV in the attic. Travel to the Kensdale Public Library and dig deeper into the mystery of Amanda the Adventurer.

Similarity 66%
Price 9.75€
Rating 7.8
Release 22 Oct 2024

The Backroom - Lost and Found

The Backroom - Lost and Found is a story rich adventure game with some horror elements. Why is there an orphaned room hidden away in the depths of a strange liminal space? Is it "the backrooms" or something else? CYOA? SCP? Weirdcore? No clipping? And what's with the cute paintings?

Similarity 66%
Price Free to play
Rating 8.3
Release 25 Jul 2022

Fobia - St. Dinfna Hotel

Explore a decadent hotel across different timelines and uncover the dark history of a fanatical cult and your role in their plans.

Similarity 66%
Price -91% 2.34€
Rating 8.2
Release 28 Jun 2022

[Chilla's Art] The Convenience Store | 夜勤事件

The Convenience Store | 夜勤事件 is a J-horror game about a college girl on a night shift.

Similarity 66%
Price 2.99€
Rating 8.1
Release 17 Feb 2020

[Chilla's Art] Inunaki Tunnel | 犬鳴トンネル

Inunaki tunnel (or Inunaki village) is a famous Japanese horror spot where people have been killed or burnt to death.

Similarity 66%
Price 2.99€
Rating 7.4
Release 19 Nov 2019

Wardwell House

A storm washed you upon the shore of a mysterious island with a horrific past. A terrifying first-person atmospheric horror game.

Similarity 66%
Price Free to play
Rating 7.8
Release 14 Jan 2020

Lamentum

Lamentum is a pixel art survival horror game, set in New England in the mid-nineteenth century.

Similarity 66%
Price -68% 5.18€
Rating 8.3
Release 27 Aug 2021

The Goatman

The Goatman is an Online CO-OP hunting game. It all began on February 23, 2019 with a call for help from the Greenfield village. It was alleged that a mysterious creature like a half goat and half demon attacked people and animals. Upon this call, a military research team set out.

Similarity 66%
Price 3.99€
Rating 6.4
Release 03 Sep 2018

REVEIL

REVEIL is a narrative first-person psycho-thriller game that focuses on story, puzzles and exploration. Find out what’s going on inside Walter Thompson and what his dark past at the Nelson Bros Circus has to do with it.

Similarity 66%
Price -31% 13.82€
Rating 8.4
Release 06 Mar 2024

灵魂筹码 Soul at Stake

Soul at Stake is an oriental-themed 1v4 surviving horror game. There once was a luring urban myth saying that if one can win the game would gain countless money, and his/her destiny would instantly change to become the mightiest overnight. All the participants need only one stake——their souls.

Similarity 66%
Price -74% 3.93€
Rating 7.4
Release 25 Jun 2018

Minds Eyes

You venture through your mind, trying desperately to wake up from your nightmares. Will you make it out?

Similarity 66%
Price Free to play
Rating 6.8
Release 31 Aug 2016

What Remains of Edith Finch

What Remains of Edith Finch is a collection of strange tales about a family in Washington state. As Edith, you’ll explore the colossal Finch house, searching for stories as she explores her family history and tries to figure out why she's the last one in her family left alive.

Similarity 66%
Price -81% 3.45€
Rating 9.4
Release 24 Apr 2017

Dead Secret

Dead Secret is a first-person horror mystery set in rural Kansas in 1965. A reclusive professor is dead and it’s up to you to crack the case before you become the next victim. Investigate the murder and explore the story Time Magazine called “captivating” and “deeply creepy” .

Similarity 66%
Price 14.99€
Rating 7.7
Release 28 Mar 2016

ZOMBI

London is falling. Are you prepared? The Last Blight is upon us. It was foretold. For the second time in history, a great plague has shrouded London in a fog of death. Big Ben tolls as thousands of unprepared die, or worse, are infected by a sickness more gruesome than death.

Similarity 66%
Price 19.99€
Rating 6.3
Release 18 Aug 2015

Spirits of Xanadu

At the farthest edge of the explored universe, the research ship Xanadu slumbers in orbit around a mysterious planet. Her systems remain active but there has been no message from her crew for months. Now a lone operative has been sent to wake the Xanadu and bring her home to Earth.

Similarity 66%
Price 4.99€
Rating 7.4
Release 26 Mar 2015

Serena

How long has it been? A man sits in a distant getaway cabin waiting for his wife Serena. Where is she? Things in the cabin evoke memories, and the husband comes to a disturbing realization... This short point-and-click adventure is the result of a massive collaborative effort between dozens of fans and designers of adventure games.

Similarity 66%
Price Free to play
Rating 7.5
Release 30 Jan 2014

Pathologic 3: Quarantine

In this free prologue to a narrative-driven adventure, watch a mysterious plague break out in a small town. Learn what drove a celebrated academic to leave his acclaimed lab. Examine patients, uncover strange secrets, and make first steps towards immortality.

Similarity 65%
Price Free to play
Rating 8.5
Release 17 Mar 2025

[Bober Bros] The Hole

[Bober Bros] The Hole is a first-person horror game that explores the cracks in domestic life. Your neighbor’s drilling starts the nightmare, but the holes reveal dark secrets far deeper than any wall could hide. No cheap scares, only disturbing reality.

Similarity 65%
Price 2.99€
Rating 8.1
Release 05 Dec 2024

[Bober Bros] It's Just A Prank

It's Just A Prank is a first-person horror game about kids playing pranks on each other until a PRANK GOES WRONG. Experience suspense, fear, and unexpected twists as a simple joke becomes a nightmare.

Similarity 65%
Price 2.99€
Rating 8.1
Release 21 Jun 2024

Fungiman

Just a game about a friendly fungus. There's nothing wrong, is there?

Similarity 65%
Price Free to play
Rating 8.4
Release 30 Jun 2022

[Chilla's Art] Night Delivery | 例外配達

Night Delivery | 例外配達 is a psychological Japanese horror adventure game.

Similarity 65%
Price 2.99€
Rating 7.6
Release 04 Jun 2021

[Chilla's Art] Okaeri | おかえり

Okaeri is a VHS Japanese psychological horror game about a middle school girl and her mother who recently moved to a new house.

Similarity 65%
Price 2.99€
Rating 6.3
Release 06 Sep 2019

Most played games like Ad Infinitum on Steam

Take a look at the top games like Ad Infinitum that are currently attracting the largest player bases on the Steam platform, as of April 30th 2025.

1. Resident Evil 4

Similarity 68% Survival is just the beginning. Six years have passed since the biological disaster in Raccoon City. Leon S. Kennedy, one of the survivors, tracks the president's kidnapped daughter to a secluded European village, where there is something terribly wrong with the locals. Resident Evil 4 is a horror, action and survival horror game developed and published by CAPCOM Co. and Ltd.. Released on March 23rd 2023 has received 177,409 reviews of which 173,330 were positive and 4,079 were negative resulting in an impressive rating of 9.6 out of 10. The game has hit the top spot as the #1 most played game like Ad Infinitum, thanks to its 4,879 peak concurrent players over the last day.
9.6
173,330
4,079

4,879
players

2. The Outlast Trials

Similarity 66% Red Barrels invites you to experience mind-numbing terror, this time with friends. Whether you go through the trials alone or in teams, if you survive long enough and complete the therapy, Murkoff will happily let you leave… but will you be the same? The Outlast Trials is a horror, multiplayer and co-op game developed and published by Red Barrels. Released on March 05th 2024 has received 65,567 reviews of which 61,275 were positive and 4,292 were negative resulting in an impressive rating of 9.2 out of 10. While seeing 4,004 players online at once in the last 24 hours, this game is currently ranked #2 among games like Ad Infinitum based on player count.
9.2
61,275
4,292

4,004
players

3. Subnautica

Similarity 65% Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive. Subnautica is a open world survival craft, survival and horror game developed and published by Unknown Worlds Entertainment. Released on January 23rd 2018 has received 310,872 reviews of which 301,651 were positive and 9,221 were negative resulting in an impressive rating of 9.6 out of 10. While seeing 2,589 players online at once in the last 24 hours, this game is currently ranked #3 among games like Ad Infinitum based on player count.
9.6
301,651
9,221

2,589
players

4. The Forest

Similarity 70% As the lone survivor of a passenger jet crash, you find yourself in a mysterious forest battling to stay alive against a society of cannibalistic mutants. Build, explore, survive in this terrifying first person survival horror simulator. The Forest is a open world survival craft, survival and open world game developed and published by Endnight Games Ltd. Released on April 30th 2018 has received 624,252 reviews of which 596,422 were positive and 27,830 were negative resulting in an impressive rating of 9.5 out of 10. With 2,448 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Ad Infinitum.
9.5
596,422
27,830

2,448
players

5. SCP: Secret Laboratory

Similarity 64% Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape. SCP: Secret Laboratory is a free to play, multiplayer and horror game developed and published by Northwood Studios. Released on December 29th 2017 has received 212,134 reviews of which 194,042 were positive and 18,092 were negative resulting in an impressive rating of 9.0 out of 10. With 2,310 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Ad Infinitum.
9.0
194,042
18,092

2,310
players

6. Metro 2033 Redux

Similarity 67% In 2013 the world was devastated by an apocalyptic event, annihilating almost all mankind and turning the Earth's surface into a poisonous wasteland. A handful of survivors took refuge in the depths of the Moscow underground, and human civilization entered a new Dark Age. The year is 2033. Metro 2033 Redux is a post-apocalyptic, fps and atmospheric game developed by 4A Games and published by Deep Silver. Released on August 27th 2014 has received 103,741 reviews of which 94,593 were positive and 9,148 were negative resulting in a rating of 9.0 out of 10. With 1,780 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Ad Infinitum.
9.0
94,593
9,148

1,780
players

7. Resident Evil 2

Similarity 70% A deadly virus engulfs the residents of Raccoon City in September of 1998, plunging the city into chaos as flesh eating zombies roam the streets for survivors. An unparalleled adrenaline rush, gripping storyline, and unimaginable horrors await you. Witness the return of Resident Evil 2. Resident Evil 2 is a zombies, survival horror and horror game developed and published by CAPCOM Co. and Ltd.. Released on January 24th 2019 has received 171,068 reviews of which 165,900 were positive and 5,168 were negative resulting in an impressive rating of 9.6 out of 10. With 1,465 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Ad Infinitum.
9.6
165,900
5,168

1,465
players

8. Resident Evil Village

Similarity 84% Experience survival horror like never before in the 8th major installment in the Resident Evil franchise - Resident Evil Village. With detailed graphics, intense first-person action and masterful storytelling, the terror has never felt more realistic. Resident Evil Village is a survival horror, horror and first-person game developed and published by CAPCOM Co. and Ltd.. Released on May 06th 2021 has received 117,965 reviews of which 112,813 were positive and 5,152 were negative resulting in an impressive rating of 9.4 out of 10. With 1,096 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Ad Infinitum.
9.4
112,813
5,152

1,096
players

9. Resident Evil 7 Biohazard

Similarity 83% Fear and isolation seep through the walls of an abandoned southern farmhouse. "7" marks a new beginning for survival horror with the “Isolated View” of the visceral new first-person perspective. Resident Evil 7 Biohazard is a horror, survival horror and first-person game developed and published by CAPCOM Co. and Ltd.. Released on January 23rd 2017 has received 96,525 reviews of which 91,934 were positive and 4,591 were negative resulting in an impressive rating of 9.4 out of 10. With 927 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Ad Infinitum.
9.4
91,934
4,591

927
players

10. Outer Wilds

Similarity 69% Named Game of the Year 2019 by Giant Bomb, Polygon, Eurogamer, and The Guardian, Outer Wilds is a critically-acclaimed and award-winning open world mystery about a solar system trapped in an endless time loop. Outer Wilds is a exploration, space and mystery game developed by Mobius Digital and published by Annapurna Interactive. Released on June 18th 2020 has received 82,852 reviews of which 79,273 were positive and 3,579 were negative resulting in an impressive rating of 9.4 out of 10. With 793 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Ad Infinitum.
9.4
79,273
3,579

793
players

Best deals on games like Ad Infinitum on Steam

Discover fantastic savings with the best discounts on a variety of games like Ad Infinitum available on Steam right now, updated on April 30th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Ad Infinitum.

1. My Friendly Neighborhood

Similarity 67% Something scary is happening with everyone's favorite Saturday morning puppet show, The Friendly Neighborhood! Play as Gordon, a repairman sent to get to the bottom of this disturbing dilemma. Fend off puppets and solve puzzles in this survival horror adventure. My Friendly Neighborhood is a singleplayer, survival horror and funny game developed by John Szymanski and Evan Szymanski and published by DreadXP. Released on July 18th 2023 has received 2,725 reviews of which 2,606 were positive and 119 were negative resulting in an impressive rating of 9.1 out of 10. Featuring a massive 96% discount, this game currently holds the #1 spot in the best deals for games like Ad Infinitum.
9.1
2,606
119

-96% 32.50€ 1.30€

2. Outlast 2

Similarity 88% Outlast 2 introduces you to Sullivan Knoth and his followers, who left our wicked world behind to give birth to Temple Gate, a town, deep in the wilderness and hidden from civilization. Knoth and his flock are preparing for the tribulations of the end of times and you’re right in the thick of it. Outlast 2 is a horror, psychological horror and survival horror game developed and published by Red Barrels. Released on April 24th 2017 has received 55,116 reviews of which 50,337 were positive and 4,779 were negative resulting in a rating of 9.0 out of 10. Thanks to its incredible 94% discount, this game is now the #2 best deal in games like Ad Infinitum.
9.0
50,337
4,779

-94% 30.67€ 1.84€

3. Maid of Sker

Similarity 80% Maid of Sker is a first-person survival horror, set in a remote hotel with a gory and macabre history from Welsh folklore. Brave the nightmares of the Quiet Ones. Do not panic…don’t even breathe! Maid of Sker is a horror, adventure and action game developed and published by Wales Interactive. Released on July 28th 2020 has received 2,177 reviews of which 1,718 were positive and 459 were negative resulting in a rating of 7.6 out of 10. Thanks to its incredible 94% discount, this game is now the #3 best deal in games like Ad Infinitum.
7.6
1,718
459

-94% 23.67€ 1.42€

4. Metro 2033 Redux

Similarity 67% In 2013 the world was devastated by an apocalyptic event, annihilating almost all mankind and turning the Earth's surface into a poisonous wasteland. A handful of survivors took refuge in the depths of the Moscow underground, and human civilization entered a new Dark Age. The year is 2033. Metro 2033 Redux is a post-apocalyptic, fps and atmospheric game developed by 4A Games and published by Deep Silver. Released on August 27th 2014 has received 103,741 reviews of which 94,593 were positive and 9,148 were negative resulting in a rating of 9.0 out of 10. Currently offered at a significant 92% discount, this title has earned the #4 position in the best deals for games like Ad Infinitum.
9.0
94,593
9,148

-92% 18.75€ 1.50€

5. The Blackout Club

Similarity 70% The Blackout Club is a first-person co-op horror game centered around a group of teenage friends investigating a monstrous secret beneath the skin of their small town. 1-4 players explore procedurally-generated missions against a fearsome enemy you can only see with your eyes closed. The Blackout Club is a horror, co-op and indie game developed and published by Question. Released on July 29th 2019 has received 2,830 reviews of which 2,203 were positive and 627 were negative resulting in a rating of 7.5 out of 10. Currently offered at a significant 92% discount, this title has earned the #5 position in the best deals for games like Ad Infinitum.
7.5
2,203
627

-92% 30.00€ 2.40€

6. Them and Us

Similarity 65% Them and Us is a classic, survival horror game with a focus on atmosphere and player immersion. Discover the truth of Alicia’s past as she descends further into her strange, unending nightmare. Them and Us is a female protagonist, survival horror and horror game developed by TendoGames Co. and Ltd. and published by TendoGames Co., Ltd. and 方块游戏(CubeGame). Released on September 28th 2021 has received 1,368 reviews of which 1,044 were positive and 324 were negative resulting in a rating of 7.3 out of 10. Currently offered at a significant 92% discount, this title has earned the #6 position in the best deals for games like Ad Infinitum.
7.3
1,044
324

-92% 32.50€ 2.60€

7. Tormented Souls

Similarity 79% Classic survival horror is back! Inspired by the original Resident Evil and Alone in the Dark series, Tormented Souls modernises with a fresh twist on the fixed perspective adventure - as Caroline Walker investigates the mysterious disappearance of twin girls in a terrifying mansion-turned-hospital. Tormented Souls is a survival horror, horror and puzzle game developed by Dual Effect and Abstract Digital and published by PQube. Released on August 26th 2021 has received 5,972 reviews of which 5,446 were positive and 526 were negative resulting in a rating of 8.8 out of 10. Currently offered at a significant 91% discount, this title has earned the #7 position in the best deals for games like Ad Infinitum.
8.8
5,446
526

-91% 19.56€ 1.76€

8. Fobia - St. Dinfna Hotel

Similarity 66% Explore a decadent hotel across different timelines and uncover the dark history of a fanatical cult and your role in their plans. Fobia - St. Dinfna Hotel is a indie, survival horror and violent game developed by Pulsatrix Studios and published by Maximum Entertainment. Released on June 28th 2022 has received 1,922 reviews of which 1,646 were positive and 276 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 91% discount, this title has earned the #8 position in the best deals for games like Ad Infinitum.
8.2
1,646
276

-91% 26.00€ 2.34€

9. Through the Woods

Similarity 67% Through the Woods is a third-person Norse horror adventure set in a forest on the western shores of Norway that tells the story of a mother and her missing son. Through the Woods is a adventure, indie and horror game developed by Antagonist and published by Fulqrum Publishing. Released on October 27th 2016 has received 1,575 reviews of which 1,116 were positive and 459 were negative resulting in a rating of 6.9 out of 10. Currently offered at a significant 91% discount, this title has earned the #9 position in the best deals for games like Ad Infinitum.
6.9
1,116
459

-91% 19.78€ 1.78€

10. Condemned: Criminal Origins

Similarity 79% What twists the mind of an ordinary human into a serial killer? Condemned: Criminal Origins is a horror, action and first-person game developed by monolith and published by SEGA. Released on October 29th 2012 has received 3,884 reviews of which 3,376 were positive and 508 were negative resulting in a rating of 8.4 out of 10. Currently offered at a significant 90% discount, this title has earned the #10 position in the best deals for games like Ad Infinitum.
8.4
3,376
508

-90% 10.20€ 1.02€

Free games like Ad Infinitum on Steam

Check out this fantastic list of free-to-play games like Ad Infinitum you can enjoy on Steam right now, updated on April 30th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like Ad Infinitum.

1. SCP: Secret Laboratory

Similarity 64% Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape. SCP: Secret Laboratory is a free to play, multiplayer and horror game developed and published by Northwood Studios. Released on December 29th 2017 has received 212,134 reviews of which 194,042 were positive and 18,092 were negative resulting in an impressive rating of 9.0 out of 10. With 2,310 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Ad Infinitum.
9.0
194,042
18,092

2,310
players

2. Poppy Playtime

Similarity 81% You must stay alive in this horror/puzzle adventure. Try to survive the vengeful toys waiting for you in the abandoned toy factory. Use your GrabPack to hack electrical circuits or nab anything from afar. Explore the mysterious facility... and don't get caught. Poppy Playtime is a horror, free to play and singleplayer game developed and published by Mob Entertainment. Released on October 12th 2021 has received 97,737 reviews of which 83,026 were positive and 14,711 were negative resulting in a rating of 8.4 out of 10. Thanks to its free to play tag and a daily player base of 666, this game has secured the #2 spot in the ranking of free games like Ad Infinitum.
8.4
83,026
14,711

666
players

3. Cry of Fear

Similarity 71% Cry of Fear is a psychological single-player and co-op horror game set in a deserted town filled with horrific creatures and nightmarish delusions. You play as a young man desperately searching for answers in the cold Scandinavian night, finding his way through the city as he slowly descends into madness. Cry of Fear is a horror, free to play and multiplayer game developed and published by Team Psykskallar. Released on April 25th 2013 has received 73,466 reviews of which 65,020 were positive and 8,446 were negative resulting in a rating of 8.7 out of 10. Thanks to its free to play tag and a daily player base of 275, this game has secured the #3 spot in the ranking of free games like Ad Infinitum.
8.7
65,020
8,446

275
players

4. Ultimate Custom Night

Similarity 76% Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties! Ultimate Custom Night is a free to play, horror and singleplayer game developed and published by Scott Cawthon. Released on June 27th 2018 has received 58,023 reviews of which 55,166 were positive and 2,857 were negative resulting in an impressive rating of 9.3 out of 10. Attracting a solid base of 132 players due to its free access, this strategy game has achieved the #4 position in the best free games like Ad Infinitum.
9.3
55,166
2,857

132
players

5. Garten of Banban 0

Similarity 75% Explore the origins of the mysterious Banban’s Kindergarten. Survive the dark past of the establishment. Try to make some friends. Uncover the truth behind the place, and who you are… Garten of Banban 0 is a horror, singleplayer and first-person game developed and published by Euphoric Brothers. Released on February 21st 2025 has received 2,548 reviews of which 1,848 were positive and 700 were negative resulting in a rating of 7.0 out of 10. The game currently holds the #5 spot among the most played free games like Ad Infinitum.
7.0
1,848
700

62
players

6. Dark Deception

Similarity 73% Death awaits you in Dark Deception, a story-driven first-person horror maze game. There's nowhere to hide & nowhere to catch your breath. Run or die - it's your choice. Trapped in a realm of nightmarish mazes with a mysterious woman, your only hope of survival is to find a way to escape. Dark Deception is a horror, free to play and multiplayer game developed and published by Glowstick Entertainment. Released on September 26th 2018 has received 20,999 reviews of which 18,680 were positive and 2,319 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #6 spot among the most played free games like Ad Infinitum.
8.7
18,680
2,319

58
players

7. Indigo Park: Chapter 1

Similarity 78% Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down. Indigo Park: Chapter 1 is a horror, free to play and first-person game developed and published by UniqueGeese. Released on May 18th 2024 has received 20,666 reviews of which 19,744 were positive and 922 were negative resulting in an impressive rating of 9.3 out of 10. The game currently holds the #7 spot among the most played free games like Ad Infinitum.
9.3
19,744
922

31
players

8. Zombie Panic! Source

Similarity 68% Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification. Zombie Panic! Source is a free to play, zombies and multiplayer game developed and published by Zombie Panic! Team. Released on October 03rd 2008 has received 7,717 reviews of which 6,533 were positive and 1,184 were negative resulting in a rating of 8.2 out of 10. The game currently holds the #8 spot among the most played free games like Ad Infinitum.
8.2
6,533
1,184

19
players

9. Nightmare House: The Original Mod

Similarity 70% Wake up, it’s time for the real nightmare to begin. Make your way through a terrorizing house, uncover the secrets of a haunted hospital, fight through hordes of the undead, and try to escape Nightmare House. Nightmare House: The Original Mod is a free to play, horror and action-adventure game developed and published by We Create Stuff. Released on November 14th 2024 has received 1,295 reviews of which 1,257 were positive and 38 were negative resulting in an impressive rating of 9.2 out of 10. The game currently holds the #9 spot among the most played free games like Ad Infinitum.
9.2
1,257
38

18
players

10. Spooky's Jump Scare Mansion

Similarity 77% Can you survive 1000 rooms of cute terror? Or will you break once the cuteness starts to fade off and you're running for your life from the unspeakable hideous beings that shake and writhe in bowels of this house? They wait for you, they wait and hunger for meeting you. Spooky's Jump Scare Mansion is a horror, free to play and cute game developed and published by Lag Studios. Released on July 28th 2015 has received 14,970 reviews of which 13,899 were positive and 1,071 were negative resulting in an impressive rating of 9.1 out of 10. The game currently holds the #10 spot among the most played free games like Ad Infinitum.
9.1
13,899
1,071

12
players