Games like Oh...Sir! Prototype on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like Oh...Sir! Prototype are available at the bottom of the page.
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Mount Your Friends
Experience the extreme simulated sporting sensation that's sweeping our digital nation! Mount Your Friends is a fiercely competitive sporting event for you to play with your friends in the contextual security of your own home, assuming that your home is not composed of sexual innuendo.
Brawlhalla
An epic platform fighter for up to 8 players online or local. Try casual free-for-alls, ranked matches, or invite friends to a private room. And it's free! Play cross-platform with millions of players on PlayStation, Xbox, Nintendo Switch, iOS, Android & Steam! Frequent updates. Over sixty Legends.
Gang Beasts
Gang Beasts is a silly multiplayer party game with surly gelatinous characters, brutal slapstick fight sequences, and absurd hazardous environments, set in the mean streets of Beef City.
Cook, Serve, Delicious!
One of the few hardcore restaurant sims in existence, Cook, Serve, Delicious! is a deceptively easy game to learn but incredibly challenging to master as you progress through your career from owning a terrible zero star cafe into a five star world famous restaurant.
Divekick
Divekick is the world’s first two-button fighting game. It distills the essence of the fighting game genre into just two buttons with no d-pad directional movement. Includes two extra playable characters: Fencer from Nidhogg and Johnny Gat from Saints Row!
CastleStorm
Welcome to the world of CastleStorm, a super genre mashup of 2D physics destruction mashed with tower defense brawler! CastleStorm was born out of the fond childhood memory of building and destroying LEGO castles.
BattleBlock Theater®
Welcome to BattleBlock Theater! You’ve got no where to go but up...on stage. Play single player or co-op to free your friends and save Hatty Hattington! Jump, solve and battle your way through a mysterious theater inhabited by highly technological felines.
Skulls of the Shogun
Enter the Samurai Afterlife and join forces with vibrant ghost-samurai warriors, magical animal monks, and mustachioed samurai generals. It's fast-paced turn-based strategy inspired by Advance Wars, and supercharged with fighting-game flare!
Rocketbirds: Hardboiled Chicken
Annihilate an evil penguin regime in this cinematic platform adventure game offering full solo and co-op campaigns.
Magicka
Magicka is a satirical action-adventure game set in a rich fantasy world based on Norse mythology. The player assumes the role of a wizard from a sacred order tasked with stopping an evil sorcerer who has thrown the world into turmoil, his foul creations besieging the forces of good.
Serious Sam 3: BFE
Serious Sam 3: BFE is a prequel to the original indie fast action FPS and Game of the Year sensation - Serious Sam: The First Encounter!
Spectromancer
A turn-based online fantasy card game. No character leveling, no grinding, no deck building - just 100% skill-based and fast-paced card battles!
Rock of Ages
A rock-solid combination of rock-rolling action, deep strategy, and captivating art and music from different ages of history, this is a game of crush or be crushed!Most played games like Oh...Sir! Prototype on Steam
Take a look at the top games like Oh...Sir! Prototype that are currently attracting the largest player bases on the Steam platform, as of April 30th 2025.
1. Brawlhalla
Similarity 81% An epic platform fighter for up to 8 players online or local. Try casual free-for-alls, ranked matches, or invite friends to a private room. And it's free! Play cross-platform with millions of players on PlayStation, Xbox, Nintendo Switch, iOS, Android & Steam! Frequent updates. Over sixty Legends. Brawlhalla is a free to play, multiplayer and fighting game developed by Blue Mammoth Games and published by Ubisoft. Released on October 17th 2017 has received 384,601 reviews of which 313,753 were positive and 70,848 were negative resulting in a rating of 8.1 out of 10. The game has hit the top spot as the #1 most played game like Oh...Sir! Prototype, thanks to its 10,855 peak concurrent players over the last day.
8.1
313,753
70,848
10,855
players
2. Overcooked! 2
Similarity 81% Overcooked returns with a brand-new helping of chaotic cooking action! Journey back to the Onion Kingdom and assemble your team of chefs in classic couch co-op or online play for up to four players. Hold onto your aprons… it’s time to save the world again! Overcooked! 2 is a multiplayer, online co-op and local co-op game developed by Ghost Town Games Ltd. and Team17 and published by Team17. Released on August 07th 2018 has received 71,948 reviews of which 65,209 were positive and 6,739 were negative resulting in a rating of 8.9 out of 10. While seeing 879 players online at once in the last 24 hours, this game is currently ranked #2 among games like Oh...Sir! Prototype based on player count.
8.9
65,209
6,739
879
players
3. Pummel Party
Similarity 81% Pummel Party is a 4-8 player online and local-multiplayer party game. Pummel friends or AI using a wide array of absurd items in the board mode and compete to destroy friendships in the unique collection of minigames. Pummel Party is a multiplayer, funny and online co-op game developed and published by Rebuilt Games. Released on September 20th 2018 has received 53,536 reviews of which 47,563 were positive and 5,973 were negative resulting in a rating of 8.7 out of 10. While seeing 802 players online at once in the last 24 hours, this game is currently ranked #3 among games like Oh...Sir! Prototype based on player count.
8.7
47,563
5,973
802
players
4. Human Fall Flat
Similarity 81% Human Fall Flat is a hilarious, light-hearted platformer set in floating dreamscapes that can be played solo or with up to 8 players online. Free new levels keep its vibrant community rewarded. Human Fall Flat is a co-op, funny and puzzle game developed by No Brakes Games and published by Curve Games. Released on July 22nd 2016 has received 212,704 reviews of which 201,388 were positive and 11,316 were negative resulting in an impressive rating of 9.4 out of 10. With 489 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Oh...Sir! Prototype.
9.4
201,388
11,316
489
players
5. Gang Beasts
Similarity 81% Gang Beasts is a silly multiplayer party game with surly gelatinous characters, brutal slapstick fight sequences, and absurd hazardous environments, set in the mean streets of Beef City. Gang Beasts is a funny, physics and multiplayer game developed by Boneloaf and Rocket Science and published by Boneloaf. Released on December 12th 2017 has received 59,949 reviews of which 50,969 were positive and 8,980 were negative resulting in a rating of 8.4 out of 10. With 210 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Oh...Sir! Prototype.
8.4
50,969
8,980
210
players
6. Monster Prom
Similarity 81% You have 3 weeks to get a date for Monster Prom! Go through absurd and funny situations, raise your stats and seduce one of your classmates. Beautiful art, bold, unapologetic dialogue and hard choices make up this Multiplayer (1-4 players) Dating Sim. Be your worst self. Monster Prom is a dating sim, comedy and lgbtq+ game developed by Beautiful Glitch and published by Those Awesome Guys and Xelu. Released on April 27th 2018 has received 13,834 reviews of which 12,901 were positive and 933 were negative resulting in an impressive rating of 9.1 out of 10. With 141 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Oh...Sir! Prototype.
9.1
12,901
933
141
players
7. Broforce
Similarity 81% Broforce is an action-packed side-scrolling run ‘n’ gun ode to freedom, putting you in control of an under-funded, overpowered paramilitary organization dealing exclusively in excessive force. Broforce is a america, action and pixel graphics game developed by Free Lives and published by Devolver Digital. Released on October 15th 2015 has received 58,697 reviews of which 56,915 were positive and 1,782 were negative resulting in an impressive rating of 9.5 out of 10. With 125 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Oh...Sir! Prototype.
9.5
56,915
1,782
125
players
8. Duck Game
Similarity 81% Enter the futuristic year of 1984, an age where ducks run wild in a frantic battle for glory. Blast your friends with Shotguns, Net Guns, Mind Control Rays, Saxophones, Magnet Guns, and much, much more. This is DUCK GAME. Don't blink. Duck Game is a multiplayer, funny and local multiplayer game developed by Landon Podbielski and published by CORPTRON GAMES CORP.. Released on June 04th 2015 has received 38,403 reviews of which 37,099 were positive and 1,304 were negative resulting in an impressive rating of 9.5 out of 10. With 101 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Oh...Sir! Prototype.
9.5
37,099
1,304
101
players
9. Untitled Goose Game
Similarity 81% It's a lovely morning in the village and you are a horrible goose. Untitled Goose Game is a funny, villain protagonist and multiplayer game developed by House House and published by Panic. Released on September 23rd 2020 has received 21,921 reviews of which 21,007 were positive and 914 were negative resulting in an impressive rating of 9.4 out of 10. The game currently holds the #9 spot among the most played games like Oh...Sir! Prototype.
9.4
21,007
914
98
players
10. Awesomenauts - the 2D moba
Similarity 86% Use your power, show your might! Play this Multiplayer Online Battle Arena (MOBA) game for FREE now! AWESOMENAUTS combines 2D platforming with team-based strategy and hero based action. Whether you are a new recruit or an intergalactic legend, play AWESOMENAUTS! Awesomenauts - the 2D moba is a moba, multiplayer and 2d game developed by Ronimo Games and published by Atari. Released on August 01st 2012 has received 26,719 reviews of which 22,609 were positive and 4,110 were negative resulting in a rating of 8.3 out of 10. The game currently holds the #10 spot among the most played games like Oh...Sir! Prototype.
8.3
22,609
4,110
90
players
Best deals on games like Oh...Sir! Prototype on Steam
Discover fantastic savings with the best discounts on a variety of games like Oh...Sir! Prototype 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 Oh...Sir! Prototype.
1. ToeJam & Earl: Back in the Groove!
Similarity 81% ToeJam & Earl: Back in the Groove! is a mash-up of the very best features of the classic console games with a ton of fresh improvements! Explore Earth as funky aliens from planet Funkotron trying to find your missing ship pieces to get back home in this casual co-op roguelike. ToeJam & Earl: Back in the Groove! is a adventure, indie and casual game developed and published by HumaNature Studios. Released on February 28th 2019 has received 1,087 reviews of which 957 were positive and 130 were negative resulting in a rating of 8.3 out of 10. Featuring a massive 92% discount, this game currently holds the #1 spot in the best deals for games like Oh...Sir! Prototype.
8.3
957
130
-92%
12.50€
1.00€
2. Cook, Serve, Delicious!
Similarity 81% One of the few hardcore restaurant sims in existence, Cook, Serve, Delicious! is a deceptively easy game to learn but incredibly challenging to master as you progress through your career from owning a terrible zero star cafe into a five star world famous restaurant. Cook, Serve, Delicious! is a indie, time management and typing game developed and published by Vertigo Gaming Inc.. Released on October 08th 2013 has received 5,604 reviews of which 5,296 were positive and 308 were negative resulting in an impressive rating of 9.1 out of 10. Thanks to its incredible 90% discount, this game is now the #2 best deal in games like Oh...Sir! Prototype.
9.1
5,296
308
-90%
10.00€
1.00€
3. Drawful 2
Similarity 81% For 3-8 players and an audience of thousands! Your phones or tablets are your controllers! The game of terrible drawings and hilariously wrong answers. Drawful 2 is a local multiplayer, party and multiplayer game developed and published by Jackbox Games and Inc.. Released on June 20th 2016 has received 4,004 reviews of which 2,970 were positive and 1,034 were negative resulting in a rating of 7.2 out of 10. Thanks to its incredible 90% discount, this game is now the #3 best deal in games like Oh...Sir! Prototype.
7.2
2,970
1,034
-90%
10.00€
1.00€
4. Quiplash
Similarity 81% For 3-8 Players and an Audience of thousands! Your phones or tablets are your controllers! The gut-busting, say-anything, no-rules party game! Quiplash is a casual, multiplayer and comedy game developed and published by Jackbox Games and Inc.. Released on June 30th 2015 has received 2,182 reviews of which 1,959 were positive and 223 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 87% discount, this title has earned the #4 position in the best deals for games like Oh...Sir! Prototype.
8.6
1,959
223
-87%
9.92€
1.29€
5. The Jackbox Party Pack
Similarity 81% The team behind YOU DON’T KNOW JACK presents FIVE guffaw-inducing party games in one pack! You’re gonna need more than one party for this. Your phones or tablets are your controllers! For 1-100 players! The Jackbox Party Pack is a casual, trivia and party game developed and published by Jackbox Games and Inc.. Released on November 26th 2014 has received 1,827 reviews of which 1,669 were positive and 158 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 86% discount, this title has earned the #5 position in the best deals for games like Oh...Sir! Prototype.
8.7
1,669
158
-86%
25.00€
3.50€
6. Serious Sam 3: BFE
Similarity 81% Serious Sam 3: BFE is a prequel to the original indie fast action FPS and Game of the Year sensation - Serious Sam: The First Encounter! Serious Sam 3: BFE is a fps, action and co-op game developed by Croteam and published by Devolver Digital. Released on November 22nd 2011 has received 27,656 reviews of which 24,440 were positive and 3,216 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 85% discount, this title has earned the #6 position in the best deals for games like Oh...Sir! Prototype.
8.7
24,440
3,216
-85%
29.33€
4.40€
7. The Metronomicon: Slay The Dance Floor
Similarity 81% A Rhythm Role-Playing Game! Fight party crashing monsters with the power of music! Level your party and upgrade your gear while dancing to the beat of some groovin' tunes. Grab a friend and combine forces in all game modes in The Metronomicon: Slay the Dance Floor! The Metronomicon: Slay The Dance Floor is a rhythm, music and indie game developed by Puuba and published by Akupara Games. Released on September 29th 2016 has received 394 reviews of which 329 were positive and 65 were negative resulting in a rating of 7.8 out of 10. Currently offered at a significant 85% discount, this title has earned the #7 position in the best deals for games like Oh...Sir! Prototype.
7.8
329
65
-85%
19.20€
2.88€
8. Overcooked! 2
Similarity 81% Overcooked returns with a brand-new helping of chaotic cooking action! Journey back to the Onion Kingdom and assemble your team of chefs in classic couch co-op or online play for up to four players. Hold onto your aprons… it’s time to save the world again! Overcooked! 2 is a multiplayer, online co-op and local co-op game developed by Ghost Town Games Ltd. and Team17 and published by Team17. Released on August 07th 2018 has received 71,948 reviews of which 65,209 were positive and 6,739 were negative resulting in a rating of 8.9 out of 10. Currently offered at a significant 83% discount, this title has earned the #8 position in the best deals for games like Oh...Sir! Prototype.
8.9
65,209
6,739
-83%
23.18€
3.94€
9. Moving Out
Similarity 81% Moving Out is a ridiculous physics-based moving simulator that brings new meaning to "couch co-op"! Are you ready for an exciting career in furniture? As a newly certified Furniture Arrangement & Relocation Technician, you’ll take on moving jobs all across the busy town of Packmore. Moving Out is a casual, indie and action game developed by SMG Studio and Devm Games and published by Team17. Released on April 28th 2020 has received 2,255 reviews of which 1,779 were positive and 476 were negative resulting in a rating of 7.6 out of 10. Currently offered at a significant 83% discount, this title has earned the #9 position in the best deals for games like Oh...Sir! Prototype.
7.6
1,779
476
-83%
23.35€
3.97€
10. Rock of Ages
Similarity 81% A rock-solid combination of rock-rolling action, deep strategy, and captivating art and music from different ages of history, this is a game of crush or be crushed! Rock of Ages is a comedy, strategy and indie game developed by ACE Team and published by SEGA. Released on September 07th 2011 has received 3,759 reviews of which 3,454 were positive and 305 were negative resulting in a rating of 8.8 out of 10. Currently offered at a significant 80% discount, this title has earned the #10 position in the best deals for games like Oh...Sir! Prototype.
8.8
3,454
305
-80%
9.99€
1.99€
Free games like Oh...Sir! Prototype on Steam
Check out this fantastic list of free-to-play games like Oh...Sir! Prototype 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 Oh...Sir! Prototype.
1. Brawlhalla
Similarity 81% An epic platform fighter for up to 8 players online or local. Try casual free-for-alls, ranked matches, or invite friends to a private room. And it's free! Play cross-platform with millions of players on PlayStation, Xbox, Nintendo Switch, iOS, Android & Steam! Frequent updates. Over sixty Legends. Brawlhalla is a free to play, multiplayer and fighting game developed by Blue Mammoth Games and published by Ubisoft. Released on October 17th 2017 has received 384,601 reviews of which 313,753 were positive and 70,848 were negative resulting in a rating of 8.1 out of 10. With 10,855 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Oh...Sir! Prototype.
8.1
313,753
70,848
10,855
players
2. Awesomenauts - the 2D moba
Similarity 86% Use your power, show your might! Play this Multiplayer Online Battle Arena (MOBA) game for FREE now! AWESOMENAUTS combines 2D platforming with team-based strategy and hero based action. Whether you are a new recruit or an intergalactic legend, play AWESOMENAUTS! Awesomenauts - the 2D moba is a moba, multiplayer and 2d game developed by Ronimo Games and published by Atari. Released on August 01st 2012 has received 26,719 reviews of which 22,609 were positive and 4,110 were negative resulting in a rating of 8.3 out of 10. The game currently holds the #2 spot among the most played free games like Oh...Sir! Prototype.
8.3
22,609
4,110
90
players
3. Pixel Puzzles Ultimate Jigsaw Puzzles
Similarity 81% The Number 1 Jigsaw Puzzle Game. Pixel Puzzles Ultimate Jigsaw Puzzles is a puzzle, board game and tabletop game developed and published by Pixel Puzzles. Released on August 29th 2022 has received 2,670 reviews of which 2,012 were positive and 658 were negative resulting in a rating of 7.3 out of 10. The game currently holds the #3 spot among the most played free games like Oh...Sir! Prototype.
7.3
2,012
658
62
players
4. Pool Nation FX Lite
Similarity 81% Pool Nation FX, is a seriously fun Pool & Snooker Sim! A visually stunning billiards simulation with the critically acclaimed POOL NATION physics engine. Play 8 Ball, 9 Ball, Snooker, Killer & more, unlimited Career modes with customised difficulty levels, Trickshots, Local and Online Multiplayer, spectate live matches and feel... Pool Nation FX Lite is a free to play, sports and pool game developed and published by Cherry Pop Games. Released on December 07th 2015 has received 2,405 reviews of which 1,743 were positive and 662 were negative resulting in a rating of 7.0 out of 10. The game currently holds the #4 spot among the most played free games like Oh...Sir! Prototype.
7.0
1,743
662
35
players
5. Magic Rampage
Similarity 81% Exciting platformer that combines the RPG genre with fast-paced action gameplay. Magic Rampage is a indie, platformer and action rpg game developed by Asantee Games and published by DK Game Dev LTDA. Released on May 24th 2022 has received 1,424 reviews of which 1,346 were positive and 78 were negative resulting in a rating of 9.0 out of 10. The game currently holds the #5 spot among the most played free games like Oh...Sir! Prototype.
9.0
1,346
78
24
players
6. The Expendabros
Similarity 99% The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe. The Expendabros is a free to play, action and pixel graphics game developed by Free Lives and published by Devolver Digital. Released on August 05th 2014 has received 18,169 reviews of which 17,658 were positive and 511 were negative resulting in an impressive rating of 9.5 out of 10. The game currently holds the #6 spot among the most played free games like Oh...Sir! Prototype.
9.5
17,658
511
14
players
7. Zaccaria Pinball
Similarity 81% Play free and try tables in trial mode with Zaccaria Pinball, featuring 140+ tables, including 40+ officially licensed from Zaccaria was founded by three brothers: Marino, Franco, & Natale. Zaccaria was the world’s 3rd largest pinball manufacturer, next to Bally & Williams. Relive the golden age. Zaccaria Pinball is a free to play, simulation and casual game developed and published by Magic Pixel Kft.. Released on June 16th 2016 has received 1,628 reviews of which 1,324 were positive and 304 were negative resulting in a rating of 7.8 out of 10. The game currently holds the #7 spot among the most played free games like Oh...Sir! Prototype.
7.8
1,324
304
14
players
8. DYO
Similarity 81% DYO is a mind-bending cooperative platformer for one or two players where you can hop between two halves of a split screen. DYO is a indie, local co-op and free to play game developed by Team DYO and Josia Roncancio and published by Team DYO. Released on February 13th 2018 has received 1,589 reviews of which 1,538 were positive and 51 were negative resulting in an impressive rating of 9.2 out of 10. The game currently holds the #8 spot among the most played free games like Oh...Sir! Prototype.
9.2
1,538
51
12
players
9. Idol Showdown
Similarity 81% Made by hololive fans, for hololive fans. Idol Showdown is the definitive fan-made hololive fighting game experience, powered by rollback netcode. Engage in exciting duels as your favorite hololive talent and prove once and for all who the strongest idol is using the game’s easy-to-learn controls. Idol Showdown is a 2d fighter, anime and pvp game developed by Besto Game Team and published by holo Indie. Released on May 05th 2023 has received 5,595 reviews of which 5,250 were positive and 345 were negative resulting in an impressive rating of 9.1 out of 10. The game currently holds the #9 spot among the most played free games like Oh...Sir! Prototype.
9.1
5,250
345
10
players
10. PICO PARK:Classic Edition
Similarity 81% PICO PARK:Classic Edition is a cooperative local multiplay action puzzle game for 2-10 players. PICO PARK:Classic Edition is a multiplayer, local co-op and free to play game developed and published by TECOPARK. Released on April 27th 2016 has received 1,505 reviews of which 1,088 were positive and 417 were negative resulting in a rating of 7.0 out of 10. The game currently holds the #10 spot among the most played free games like Oh...Sir! Prototype.
7.0
1,088
417
8
players