Games like Cepheus Protocol on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like Cepheus Protocol are available at the bottom of the page.
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Factorio
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
Scrap Mechanic
Enter the creative paradise of Scrap Mechanic! Build fantastic machines, go on adventures with your friends and defend against waves of evil Farmbots in this imaginative multiplayer survival sandbox. With Scrap Mechanic’s powerful creation tools you can engineer your own adventures!
RimWorld
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.
FortressCraft Evolved!
FortressCraft Evolved is a unique blend of Voxel Landscapes, Tower Defense, Crafting, Logistics, Exploration, Combat and Assembly lines. Players begin by crash-landing on a strange alien world, left with only a small handful of starting machines.
Retreat To Enen
Base building simulator 1500 years in the future. Journey to the Island of Enen to forage, craft, build, hunt, meditate, and explore across three vast biomes. Discover secrets and create the retreat of your dreams. With over 160 unique items to gather, craft, and build, every home will be unique.
Jurassic World Evolution 2
Jurassic World Evolution 2 is the much-anticipated sequel to Frontier’s highly successful Jurassic World Evolution. This bold new era in the Jurassic World Evolution game franchise builds upon the ground-breaking and immersive 2018 management simulation.
Ruinarch
Ruinarch is an evil god simulator and sandbox game where you mess with people’s lives for hilarious results! Make them vampires, werewolves or bard haters and cackle as the drama unfolds. Once you’re done, unleash a malicious buffet of spells and custom plagues to wipe them out and start anew!
Ancient Warfare 3
Dive into a sandbox full of action and customization! Choose from different game modes like deathmatch, conquest, king of the hill, zombie survival and many more. Create your own scenarios and content in the easy to use in-game editors or use one of the 50k+ workshop items from other players...
Infectonator 3: Apocalypse
A campy, crazy pixelart zombie apocalypse arcade sim where you're the bad guy. Drop your virus and spread it across the globe while you unlock a whole horde of bizarre undead to do your bidding.
Hearts of Iron IV
Victory is at your fingertips! Your ability to lead your nation is your supreme weapon, the strategy game Hearts of Iron IV lets you take command of any nation in World War II; the most engaging conflict in world history.
Arizona Sunshine®
Built exclusively for VR, Arizona Sunshine® puts you and up to 3 fellow survivors in the midst of a zombie apocalypse. Survive solo or in co-op, handle weapons with real-life movements, and explore a post-apocalyptic world in VR. Putting the undead back to rest is more thrilling than ever before.
Guns and Robots
Guns and Robots is free to play online third person shooter. The game brings robot action with massive customization. Players get cartoony bright 3D graphics in attractive environments and challenge each other in open arenas.
How to Survive
“A real Gem” – Destructoid at E3 “Offers a different experience for zombie game veterans” – Co-Optimus“Has a lot more going for it than smashing brains and gory, red goo ... With a surprisingly deep crafting system” – GamesRadarYou're shipwrecked on an isolated island, a desperate castaway in a total freakshow world. How will you survive?
Atom Zombie Smasher
The zombie apocalypse is upon us and it's up to you to evacuate everyone before they fall prey to the undead. Conduct massive rescue operations with a helping hand from snipers, artillery crews, orbital bombardments, and more.
Quarantineer
For the glory of Motherland, the truth shall never be revealed. None of us expected this, Yet history is repeating itself.
Dawn of Man
Command a settlement of ancient humans, guide them through the ages in their struggle for survival. Hunt, gather, craft tools, fight, research new techs and face the challenges the environment will throw at you.
My Time at Portia
Start a new life in the enchanting town of Portia! Restore your Pa's neglected workshop to its former glory by fulfilling commissions, growing crops, raising animals, and befriending the quirky inhabitants of this charming post-apocalyptic land!
Cube Land Arena
The kingdom of Cubia call for your help, come to this vast kingdom where you will face strong enemies and hard challenges, you are the chosen to defend the cristals of life and finally bring peace to reign of Cubia.
Space Pirates and Zombies
Explore a randomly generated Galaxy populated with factions, enemies, missions, and items providing you with a unique experience each time you play.
Gratuitous Space Battles
Who needs backstory? Who needs resource-gathering? Diplomacy is so last year. Gratuitous Space Battles cuts right to the chase of sci-fi strategy games, and deals with large, completely unjustified space battles between huge opposing space fleets.
AutoForge
A 2D automation sandbox adventure. Build an automated factory with Mana-powered machines, progress through an expansive tech tree, explore a vast and wonderful world, upgrade yourself with ancient technologies, and defend it all from invasions.
Cataclismo
Design and build fortresses brick by brick to stand against endless hordes of Horrors in this real-time strategy game with resource management, siege defense, and exploration. Lead from the ramparts, push back the darkness, and hold fast against the creatures of the Mist.
Night of the Dead
'Night of the Dead' is an open-world game that combines elements of exploration, tower defense, survival, and crafting. Traverse a world dominated by zombies while collecting various resources and powerful equipment. Build a fortress to survive the hordes of zombies that swarm every night!Most played games like Cepheus Protocol on Steam
Take a look at the top games like Cepheus Protocol that are currently attracting the largest player bases on the Steam platform, as of April 30th 2025.
1. Rust
Similarity 52% The only aim in Rust is to survive. Everything wants you to die - the island’s wildlife, other inhabitants, the environment, and other survivors. Do whatever it takes to last another night. Rust is a survival, crafting and multiplayer game developed and published by Facepunch Studios. Released on February 08th 2018 has received 1,215,155 reviews of which 1,060,406 were positive and 154,749 were negative resulting in a rating of 8.7 out of 10. The game has hit the top spot as the #1 most played game like Cepheus Protocol, thanks to its 59,015 peak concurrent players over the last day.
8.7
1,060,406
154,749
59,015
players
2. Hearts of Iron IV
Similarity 51% Victory is at your fingertips! Your ability to lead your nation is your supreme weapon, the strategy game Hearts of Iron IV lets you take command of any nation in World War II; the most engaging conflict in world history. Hearts of Iron IV is a strategy, world war ii and grand strategy game developed by Paradox Development Studio and published by Paradox Interactive. Released on June 06th 2016 has received 337,948 reviews of which 301,552 were positive and 36,396 were negative resulting in a rating of 8.8 out of 10. While seeing 23,200 players online at once in the last 24 hours, this game is currently ranked #2 among games like Cepheus Protocol based on player count.
8.8
301,552
36,396
23,200
players
3. RimWorld
Similarity 51% A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more. RimWorld is a colony sim, base-building and survival game developed and published by Ludeon Studios. Released on October 17th 2018 has received 208,163 reviews of which 203,940 were positive and 4,223 were negative resulting in an impressive rating of 9.7 out of 10. While seeing 18,188 players online at once in the last 24 hours, this game is currently ranked #3 among games like Cepheus Protocol based on player count.
9.7
203,940
4,223
18,188
players
4. 7 Days to Die
Similarity 62% 7 Days to Die is an open-world game that is a unique combination of first-person shooter, survival horror, tower defense, and role-playing games. Play the definitive zombie survival sandbox RPG that came first. Navezgane awaits! 7 Days to Die is a survival, zombies and multiplayer game developed by The Fun Pimps and published by The Fun Pimps Entertainment LLC. Released on July 25th 2024 has received 367,522 reviews of which 325,645 were positive and 41,877 were negative resulting in a rating of 8.8 out of 10. With 18,083 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Cepheus Protocol.
8.8
325,645
41,877
18,083
players
5. Project Zomboid
Similarity 63% Project Zomboid is the ultimate in zombie survival. Alone or in MP: you loot, build, craft, fight, farm and fish in a struggle to survive. A hardcore RPG skillset, a vast map, massively customisable sandbox and a cute tutorial raccoon await the unwary. So how will you die? All it takes is a bite.. Project Zomboid is a survival, zombies and open world game developed and published by The Indie Stone. Released on November 08th 2013 has received 369,979 reviews of which 348,457 were positive and 21,522 were negative resulting in an impressive rating of 9.3 out of 10. With 16,414 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Cepheus Protocol.
9.3
348,457
21,522
16,414
players
6. Factorio
Similarity 51% Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you. Factorio is a automation, base-building and resource management game developed and published by Wube Software LTD.. Released on August 14th 2020 has received 213,390 reviews of which 206,974 were positive and 6,416 were negative resulting in an impressive rating of 9.6 out of 10. With 13,456 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Cepheus Protocol.
9.6
206,974
6,416
13,456
players
7. Satisfactory
Similarity 54% Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven! Satisfactory is a base-building, automation and open world game developed by Coffee Stain Studios and published by Coffee Stain Publishing. Released on September 10th 2024 has received 229,040 reviews of which 222,475 were positive and 6,565 were negative resulting in an impressive rating of 9.6 out of 10. With 12,693 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Cepheus Protocol.
9.6
222,475
6,565
12,693
players
8. Unturned
Similarity 54% You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living. Unturned is a free to play, survival and zombies game developed and published by Smartly Dressed Games. Released on July 07th 2017 has received 554,408 reviews of which 505,746 were positive and 48,662 were negative resulting in an impressive rating of 9.1 out of 10. With 8,988 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Cepheus Protocol.
9.1
505,746
48,662
8,988
players
9. The Long Dark
Similarity 57% THE LONG DARK is a thoughtful, exploration-survival experience that challenges solo players to think for themselves as they explore an expansive frozen wilderness in the aftermath of a geomagnetic disaster. There are no zombies -- only you, the cold, and all the threats Mother Nature can muster. The Long Dark is a survival, open world survival craft and open world game developed and published by Hinterland Studio Inc.. Released on August 01st 2017 has received 110,202 reviews of which 99,943 were positive and 10,259 were negative resulting in a rating of 9.0 out of 10. With 4,888 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Cepheus Protocol.
9.0
99,943
10,259
4,888
players
10. Space Engineers
Similarity 56% Space Engineers is a sandbox game about engineering, construction, exploration and survival in space and on planets. Players build space ships, space stations, planetary outposts of various sizes and uses, pilot ships and travel through space to explore planets and gather resources to survive. Space Engineers is a space, sandbox and building game developed and published by Keen Software House. Released on February 28th 2019 has received 131,878 reviews of which 116,777 were positive and 15,101 were negative resulting in a rating of 8.7 out of 10. With 4,402 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Cepheus Protocol.
8.7
116,777
15,101
4,402
players
Best deals on games like Cepheus Protocol on Steam
Discover fantastic savings with the best discounts on a variety of games like Cepheus Protocol 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 Cepheus Protocol.
1. Stronghold Crusader 2
Similarity 62% Stronghold Crusader 2 is the long awaited sequel to the original castle sim. After 12 years Stronghold returns to the desert with a new 3D engine and powerful Havok Physics. Crusader 2 recaptures the original game’s addictive, fast-paced gameplay and authentic castle simulation. Stronghold Crusader 2 is a strategy, medieval and city builder game developed and published by FireFly Studios. Released on September 22nd 2014 has received 16,945 reviews of which 12,225 were positive and 4,720 were negative resulting in a rating of 7.1 out of 10. Featuring a massive 93% discount, this game currently holds the #1 spot in the best deals for games like Cepheus Protocol.
7.1
12,225
4,720
-93%
34.57€
2.42€
2. Life is Feudal: Forest Village
Similarity 54% LiF:Forest Village is a city builder with survival aspects in a realistic harsh medieval world. Shape, build and expand your settlement, grow various food to prevent your villagers from avitaminosis and starvation. Possess them for additional micromanagement or simply to wander around. Life is Feudal: Forest Village is a city builder, colony sim and strategy game developed by Mindillusion and published by Bitbox Ltd.. Released on May 26th 2017 has received 5,881 reviews of which 3,897 were positive and 1,984 were negative resulting in a rating of 6.5 out of 10. Thanks to its incredible 93% discount, this game is now the #2 best deal in games like Cepheus Protocol.
6.5
3,897
1,984
-93%
24.57€
1.72€
3. Cartel Tycoon
Similarity 53% Cartel Tycoon is a survival business sim inspired by the ‘80s and '90s narco trade. Expand and conquer, fight off rival thugs and evade the authorities. Earn people's loyalty and strive to overcome the doomed fate of a power-hungry drug lord. Cartel Tycoon is a top-down, rts and resource management game developed by Moon Moose and published by tinyBuild. Released on July 26th 2022 has received 3,518 reviews of which 2,687 were positive and 831 were negative resulting in a rating of 7.4 out of 10. Thanks to its incredible 92% discount, this game is now the #3 best deal in games like Cepheus Protocol.
7.4
2,687
831
-92%
28.25€
2.26€
4. Surviving the Aftermath
Similarity 51% Survive and thrive in a post-apocalyptic future — resources are scarce, but opportunity calls! Build the ultimate disaster proof colony, protect your colonists, and restore civilization to a devastated world. Surviving the Aftermath is a strategy, simulation and city builder game developed by Iceflake Studios and published by Paradox Interactive. Released on November 16th 2021 has received 4,332 reviews of which 3,062 were positive and 1,270 were negative resulting in a rating of 6.9 out of 10. Currently offered at a significant 91% discount, this title has earned the #4 position in the best deals for games like Cepheus Protocol.
6.9
3,062
1,270
-91%
30.78€
2.77€
5. The Long Dark
Similarity 57% THE LONG DARK is a thoughtful, exploration-survival experience that challenges solo players to think for themselves as they explore an expansive frozen wilderness in the aftermath of a geomagnetic disaster. There are no zombies -- only you, the cold, and all the threats Mother Nature can muster. The Long Dark is a survival, open world survival craft and open world game developed and published by Hinterland Studio Inc.. Released on August 01st 2017 has received 110,202 reviews of which 99,943 were positive and 10,259 were negative resulting in a rating of 9.0 out of 10. Currently offered at a significant 90% discount, this title has earned the #5 position in the best deals for games like Cepheus Protocol.
9.0
99,943
10,259
-90%
29.99€
2.99€
6. Stronghold Crusader 2
Similarity 62% Stronghold Crusader 2 is the long awaited sequel to the original castle sim. After 12 years Stronghold returns to the desert with a new 3D engine and powerful Havok Physics. Crusader 2 recaptures the original game’s addictive, fast-paced gameplay and authentic castle simulation. Stronghold Crusader 2 is a game developed and published by . Released on September 22nd 2014 has received 16,945 reviews of which 12,225 were positive and 4,720 were negative resulting in a rating of 7.1 out of 10. Currently offered at a significant 93% discount, this title has earned the #6 position in the best deals for games like Cepheus Protocol.
7.1
12,225
4,720
-93%
34.57€
2.42€
7. DESOLATE
Similarity 58% DESOLATE is a first person horror survival experience. Form a research team with up to 4 players and explore an open world filled with mysteries and unsolved questions, or do it all on your own. DESOLATE is a survival, open world and horror game developed by Nearga and published by HypeTrain Digital. Released on January 17th 2019 has received 7,862 reviews of which 5,251 were positive and 2,611 were negative resulting in a rating of 6.6 out of 10. Currently offered at a significant 90% discount, this title has earned the #7 position in the best deals for games like Cepheus Protocol.
6.6
5,251
2,611
-90%
15.10€
1.51€
8. Endzone - A World Apart
Similarity 56% Endzone is a post-apocalyptic survival city builder, where you start a new civilization with a group of people after an ecological disaster. Build them a new home and ensure their survival in a shattered world, threatened by constant radiation, toxic rain, sandstorms and droughts. Endzone - A World Apart is a city builder, survival and strategy game developed by Gentlymad Studios and published by Assemble Entertainment and WhisperGames. Released on March 18th 2021 has received 9,402 reviews of which 7,241 were positive and 2,161 were negative resulting in a rating of 7.5 out of 10. Currently offered at a significant 89% discount, this title has earned the #8 position in the best deals for games like Cepheus Protocol.
7.5
7,241
2,161
-89%
28.91€
3.18€
9. TerraTech
Similarity 54% TerraTech is an open-world, sandbox adventure game, where you design and build your own creations through a mix of crafting, combat and discovery. Design vehicles from a huge library of blocks. Scavenge, craft and buy new parts to survive and become the ultimate planetary prospector. TerraTech is a building, sandbox and open world game developed and published by Payload Studios. Released on August 10th 2018 has received 23,303 reviews of which 21,271 were positive and 2,032 were negative resulting in a rating of 8.9 out of 10. Currently offered at a significant 88% discount, this title has earned the #9 position in the best deals for games like Cepheus Protocol.
8.9
21,271
2,032
-88%
24.17€
2.90€
10. Sheltered
Similarity 59% Sheltered is a deep and emotional survival management game. You take on the role of protecting four family members who, after a global apocalypse, have found their way to a deserted shelter. Sheltered is a survival, base-building and post-apocalyptic game developed by Unicube and Team 17 Digital Ltd and published by Team17 Digital Ltd. Released on March 15th 2016 has received 6,081 reviews of which 4,962 were positive and 1,119 were negative resulting in a rating of 7.9 out of 10. Currently offered at a significant 88% discount, this title has earned the #10 position in the best deals for games like Cepheus Protocol.
7.9
4,962
1,119
-88%
12.75€
1.53€
Free games like Cepheus Protocol on Steam
Check out this fantastic list of free-to-play games like Cepheus Protocol 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 Cepheus Protocol.
1. Unturned
Similarity 54% You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living. Unturned is a free to play, survival and zombies game developed and published by Smartly Dressed Games. Released on July 07th 2017 has received 554,408 reviews of which 505,746 were positive and 48,662 were negative resulting in an impressive rating of 9.1 out of 10. With 8,988 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Cepheus Protocol.
9.1
505,746
48,662
8,988
players
2. Fallout Shelter
Similarity 53% Fallout Shelter puts you in control of a state-of-the-art underground Vault from Vault-Tec. Build the perfect Vault, keep your Dwellers happy, and protect them from the dangers of the Wasteland. Fallout Shelter is a free to play, base-building and survival game developed by Bethesda Game Studios and published by Bethesda Softworks. Released on March 29th 2017 has received 73,924 reviews of which 65,394 were positive and 8,530 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 949, this game has secured the #2 spot in the ranking of free games like Cepheus Protocol.
8.7
65,394
8,530
949
players
3. Midas Gold Plus
Similarity 53% Discover Midas Gold Plus, an engaging idle clicker set in a mythical world! Harness King Midas' golden touch, build a legendary city, and unlock powerful champions. Master unique gameplay styles, explore pet battles, and conquer rival cities. Delve into this ancient tycoon adventure today! Midas Gold Plus is a free to play, clicker and indie game developed and published by Holyday Studios. Released on February 01st 2017 has received 1,754 reviews of which 1,504 were positive and 250 were negative resulting in a rating of 8.2 out of 10. The game currently holds the #3 spot among the most played free games like Cepheus Protocol.
8.2
1,504
250
24
players
4. Oxygen: First Breath
Similarity 51% This is a free version of Oxygen, featuring the first 50 game-days. Build your city around the Oxygen Center and ensure your people's survival in a post-apocalyptic future, threatened by crack explosions, deadly winds, droughts and frosts. Lead your people and keep the Oxygen Center running! Oxygen: First Breath is a strategy, base building and city builder game developed by Turquoise Revival Games and published by GrabTheGames and UpgradePoint. Released on October 07th 2022 has received 1,586 reviews of which 1,425 were positive and 161 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #4 spot among the most played free games like Cepheus Protocol.
8.6
1,425
161
4
players
5. Outpost
Similarity 53% Outpost brings the perfect mix between survival and roguelite gameplay. Start the game in a randomly generated environment and try to adapt, and make it through as many nights as possible. How long can you survive? Outpost is a free to play, indie and strategy game developed and published by Open Mid Interactive. Released on May 01st 2020 has received 757 reviews of which 664 were positive and 93 were negative resulting in a rating of 8.3 out of 10. The game currently holds the #5 spot among the most played free games like Cepheus Protocol.
8.3
664
93
1
players
6. The Wall
Similarity 53% [Servers Temporarily Shut Down!] Build. Gather. Breach. The Wall is a never-before seen mix of genres, where dynamic maps, slick combat, base building, and economy management all come together. The Wall is a early access, fps and wargame game developed and published by Aero Games. Released on November 02nd 2018 has received 385 reviews of which 276 were positive and 109 were negative resulting in a rating of 6.8 out of 10. The game currently holds the #6 spot among the most played free games like Cepheus Protocol.
6.8
276
109
7. Kingdom Wars
Similarity 53% Kingdom Wars is a free to play 3D MMORTS with real-time siege combat, without the pay to win element so common in the genre. Kingdom Wars offers beautiful 3D online world, where players construct strongholds, direct citizens, complete quests and eventually manage a global empire. Kingdom Wars is a strategy, free to play and rts game developed by Reverie World Studios and published by . Released on April 01st 2013 has received 2,779 reviews of which 1,872 were positive and 907 were negative resulting in a rating of 6.6 out of 10. The game currently holds the #7 spot among the most played free games like Cepheus Protocol.
6.6
1,872
907
8. Zombie Builder Defense
Similarity 53% Top down, action packed, multiplayer, zombie shooter. Build your base with friends and see how long you can survive the endless horde of zombies. Level up with friends, or alone, how you die is up to you. Zombie Builder Defense is a action, zombies and online co-op game developed and published by Noham Games. Released on November 02nd 2018 has received 494 reviews of which 333 were positive and 161 were negative resulting in a rating of 6.5 out of 10. The game currently holds the #8 spot among the most played free games like Cepheus Protocol.
6.5
333
161
9. Guns and Robots
Similarity 51% Guns and Robots is free to play online third person shooter. The game brings robot action with massive customization. Players get cartoony bright 3D graphics in attractive environments and challenge each other in open arenas. Guns and Robots is a free to play, action and robots game developed by Masthead Studios Ltd and published by Masthead Studios Ltd, Thegamewallstudios and gamigo AG. Released on August 04th 2014 has received 1,692 reviews of which 1,112 were positive and 580 were negative resulting in a rating of 6.4 out of 10. The game currently holds the #9 spot among the most played free games like Cepheus Protocol.
6.4
1,112
580