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.
Filters & Lists
Kreedz Climbing
Kreedz Climbing is the ultimate non-violent 3D platformer. Race against time and other players...or not and just relax on a server and watch others as they compete with the best to become a legend on the scene!
Get Off My Lawn!
They came in peace, but messed with the wrong old man. Armed with a musket, 78 year old Murray Mendelson has single-handedly started an interstellar war. Shoot first and ask questions later in this endless fast paced arcade shooter. Use everything in Murray’s arsenal to keep the aliens off of his perfectly manicured lawn!
Enemy On Board
Online (6v2) social deduction game that will ruin your friendships. 6 crew members, 2 murderous shape-shifting aliens. Trust No One.
Worlds Adrift Island Creator
Worlds Adrift is a Community-Crafted MMO: each and every island has been crafted by our playerbase. With the free Island Creator tool, this is your chance to create your own adventure for the community to experience. A crumbling ruin, or a teeming jungle, help expand the edges of Foundation ever further!
Escape Lala - Retro Point and Click Adventure
You wake up inside a magical cave, can you escape? A nostalgic adventure game <3
Cyrano Story
Born from an Alternate Reality Game experience created by Alice & Smith in 2019, Cyrano Story is a complex puzzle game designed to ascend to intergalactic forces and give insight into the backstory of Funcom’s cosmic horror game Moons of Madness.
Nonogram - Master's Legacy
Master's Legacy - discover all beauty of Nonogram puzzles (multiple game modes, level sizes), master painting skills in Editor and share works with friends in Workshop. Become The Greatest.
Nova-Life: Amboise
Nova-Life: Amboise is a multiplayer role-play simulation video game. Create your character and start your second life!
Spellweaver
Spellweaver is a free-to-play digital card game true to the classics of the genre, adding in several unique features for a new and fresh gameplay experience. With a focus of strategic depth and variety, it offers endless hours of fun in casual or AI matches, ranked play, drafts, and tournaments!
Lethal League
Lethal League is a competitive projectile fighting game where you have to hit an anti-gravity ball into the face of your opponent to win. The ball speeds up with every strike, up to explosively extreme velocities. Play intense local matches with friends and foes, challenge yourself in the singleplayer mode or battle it out online.
Galcon 2: Galactic Conquest
Galcon 2 is a demolition derby in space! Send swarms of ships from planet to planet to conquer the galaxy in this fast paced multiplayer strategy game!
Toasterball
A ball, two goals and... toasters! Welcome to Toasterball. Play against your friends in this physics-based multiplayer sports game, where toasters are athletes, bread flies everywhere and the gameplay changes every time you score a goal!
SEPTEMBER 1999
A free, VHS styled, first-person found footage horror game, which runs exactly for 5 minutes and 30 seconds.
AVICII Invector
Soar through vocal melodies, sweep each fade and attack every beat in 25 of AVICII’s biggest hits, in this enthralling futuristic rhythm-action experience – AVICII Invector.
One Troll Army
Play as a giant troll in One Troll Army - a defense game about building forts, upgrading your troll, and fighting off waves of enemies. Play Against The Twitch Chat!
TowerFall Ascension
TowerFall Ascension is the definitive version of the hit archery combat game. Inspired by classics from the golden age of couch multiplayer, it's a 4-player local party game centering around hilarious, intense versus matches. The core mechanics are simple and accessible, but hard to master and combat is fierce.
Cateau
The award-winning game Cateau is a visually, musically, and narratively beautiful experience. Enter the enchantingly atmospheric streets of Paris, getting to know truly distinct characters while every choice you make, whether big or small, carries weight and consequence in this little adventure.
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 June 16th 2025.
1. NGU IDLE
Similarity 51% NGU Idle is a Free To Play Idle game that's full of weird humor, tons of upgrades and hundreds of hours of content! Try out NGU Idle today and experience the joy of Numbers Going Up! NGU IDLE is a free to play, idler and indie game developed and published by 4G. Released on October 01st 2019 has received 12,068 reviews of which 11,564 were positive and 504 were negative resulting in an impressive rating of 9.3 out of 10. The game has hit the top spot as the #1 most played game like Oh...Sir! Prototype, thanks to its 3,270 peak concurrent players over the last day.
9.3
11,564
504
3,270
players
2. Idling to Rule the Gods
Similarity 46% Idling to Rule the Gods is a free to play Idle-Game with a lot of content and some Minigames. Depending on your play-style, you can play it fast or slow. Either way it can be fun for hundreds of hours! Idling to Rule the Gods is a free to play, indie and simulation game developed and published by Shugasu GmbH. Released on May 27th 2016 has received 1,916 reviews of which 1,638 were positive and 278 were negative resulting in a rating of 8.2 out of 10. While seeing 1,065 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.
8.2
1,638
278
1,065
players
3. Satisfactory Modeler
Similarity 64% Model your Satisfactory builds. Set up your machines however you like, adding optional limits to the number of any of those machines and the tool will calculate how the parts will flow and how many of each machine type are getting used. Satisfactory Modeler is a free to play, indie and simulation game developed and published by David Price. Released on September 17th 2024 has received 849 reviews of which 825 were positive and 24 were negative resulting in an impressive rating of 9.1 out of 10. While seeing 676 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.
9.1
825
24
676
players
4. Poker Championship
Similarity 55% Play the most authentic Texas Hold’em Poker App. Fair play guaranteed by the officially certified Random Number Generator implemented for every hand dealing. Compete with outstanding players throughout the world in real time and be the World Champion! Poker Championship is a free to play, indie and massively multiplayer game developed and published by BBstudio Inc.. Released on September 25th 2019 has received 2,522 reviews of which 2,030 were positive and 492 were negative resulting in a rating of 7.8 out of 10. With 244 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Oh...Sir! Prototype.
7.8
2,030
492
244
players
5. The Jackbox Megapicker
Similarity 46% The Jackbox Megapicker is a game launcher for all of your Jackbox games. This free bit of software will allow you to launch all owned games from one convenient location. This means that you will no longer need to switch between Party Packs to start playing the games you love most. The Jackbox Megapicker is a free to play, utilities and party game developed and published by Jackbox Games and Inc.. Released on July 29th 2024 has received 706 reviews of which 539 were positive and 167 were negative resulting in a rating of 7.3 out of 10. With 224 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Oh...Sir! Prototype.
7.3
539
167
224
players
6. Cube Racer
Similarity 46% Cube Racer is a round based multiplayer racing game with cubes. Every round, all players race against each other to the finish line. Before every round, the players get to build one or more obstacles on the map. In the next round, all players have to pass all the obstacles, which have been built yet. Cube Racer is a indie, action and casual game developed and published by Simon Blasen. Released on October 30th 2017 has received 1,980 reviews of which 1,791 were positive and 189 were negative resulting in a rating of 8.6 out of 10. With 223 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Oh...Sir! Prototype.
8.6
1,791
189
223
players
7. SpeedRunners
Similarity 54% Cut-throat multiplayer running game that pits 4 players against each other, locally and/or online. Run, jump, swing around, and use devious weapons and pick-ups to knock opponents off-screen! One of the most competitive games you'll ever play. SpeedRunners is a multiplayer, racing and local multiplayer game developed by DoubleDutch Games and published by tinyBuild. Released on April 19th 2016 has received 36,740 reviews of which 34,525 were positive and 2,215 were negative resulting in an impressive rating of 9.2 out of 10. With 211 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Oh...Sir! Prototype.
9.2
34,525
2,215
211
players
8. Duck Game
Similarity 46% 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 38,476 reviews of which 37,172 were positive and 1,304 were negative resulting in an impressive rating of 9.5 out of 10. With 143 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
37,172
1,304
143
players
9. The Jackbox Party Pack 6
Similarity 48% It’s the wildest Party Pack yet, with the absurd deathmatch Trivia Murder Party 2, the weird word circus Dictionarium, the hidden identity game Push The Button, the comedy contest Joke Boat and the offbeat personality test Role Models. The Jackbox Party Pack 6 is a trivia, casual and multiplayer game developed and published by Jackbox Games and Inc.. Released on October 16th 2019 has received 2,957 reviews of which 2,812 were positive and 145 were negative resulting in an impressive rating of 9.1 out of 10. With 132 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Oh...Sir! Prototype.
9.1
2,812
145
132
players
10. Time Clickers
Similarity 47% Time Clickers is what's called an 'incremental game'. There's always a fun upgrade to look forward to, and the numbers keep getting bigger! Hire a team to fight for you, even when you're offline! Time Clickers is a clicker, free to play and casual game developed by Proton Studio Inc and published by . Released on July 23rd 2015 has received 5,048 reviews of which 4,420 were positive and 628 were negative resulting in a rating of 8.5 out of 10. With 129 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Oh...Sir! Prototype.
8.5
4,420
628
129
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 June 16th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Oh...Sir! Prototype.
1. Fibbage XL
Similarity 50% NOTE: This game first appeared in The Jackbox Party Pack. It’s Fibbage XL – The Hilarious Bluffing Party Game in standalone form! Fool your friends with your lies, avoid theirs, and find the (usually outrageous) truth. “The mayor of Rabbit Hash, Kentucky is a ____.” Baby? Rabbit? Ham sandwich? Go! Fibbage XL is a strategy, casual and indie game developed and published by Jackbox Games and Inc.. Released on March 24th 2016 has received 318 reviews of which 301 were positive and 17 were negative resulting in a rating of 8.7 out of 10. Featuring a massive 98% discount, this game currently holds the #1 spot in the best deals for games like Oh...Sir! Prototype.
8.7
301
17
-98%
9.99€
0.22€
2. Drawful 2
Similarity 48% 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 4,019 reviews of which 2,983 were positive and 1,036 were negative resulting in a rating of 7.2 out of 10. Thanks to its incredible 97% discount, this game is now the #2 best deal in games like Oh...Sir! Prototype.
7.2
2,983
1,036
-97%
9.99€
0.32€
3. TowerFall Ascension
Similarity 51% TowerFall Ascension is the definitive version of the hit archery combat game. Inspired by classics from the golden age of couch multiplayer, it's a 4-player local party game centering around hilarious, intense versus matches. The core mechanics are simple and accessible, but hard to master and combat is fierce. TowerFall Ascension is a local multiplayer, indie and 2d fighter game developed by Maddy Makes Games Inc., Extremely OK Games and Ltd. and published by Maddy Makes Games Inc.. Released on March 11th 2014 has received 3,410 reviews of which 3,236 were positive and 174 were negative resulting in an impressive rating of 9.1 out of 10. Thanks to its incredible 96% discount, this game is now the #3 best deal in games like Oh...Sir! Prototype.
9.1
3,236
174
-96%
14.79€
0.71€
4. TowerFall Ascension
Similarity 51% TowerFall Ascension is the definitive version of the hit archery combat game. Inspired by classics from the golden age of couch multiplayer, it's a 4-player local party game centering around hilarious, intense versus matches. The core mechanics are simple and accessible, but hard to master and combat is fierce. TowerFall Ascension is a game developed and published by . Released on March 11th 2014 has received 3,410 reviews of which 3,236 were positive and 174 were negative resulting in an impressive rating of 9.1 out of 10. Currently offered at a significant 96% discount, this title has earned the #4 position in the best deals for games like Oh...Sir! Prototype.
9.1
3,236
174
-96%
14.79€
0.71€
5. Fibbage XL
Similarity 50% NOTE: This game first appeared in The Jackbox Party Pack. It’s Fibbage XL – The Hilarious Bluffing Party Game in standalone form! Fool your friends with your lies, avoid theirs, and find the (usually outrageous) truth. “The mayor of Rabbit Hash, Kentucky is a ____.” Baby? Rabbit? Ham sandwich? Go! Fibbage XL is a game developed and published by . Released on March 24th 2016 has received 318 reviews of which 301 were positive and 17 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 98% discount, this title has earned the #5 position in the best deals for games like Oh...Sir! Prototype.
8.7
301
17
-98%
9.99€
0.22€
6. STARWHAL
Similarity 58% The local multi-player space narwhal fighting game that has rocked the internet is finally ready for its big debut in a fully loaded release! Flop it out with 1-4 players in a retro, epic narwhal battle in space! The heart-piercing action is furious and unrelenting. STARWHAL will change your life. STARWHAL is a local multiplayer, indie and funny game developed and published by Breakfall. Released on September 29th 2014 has received 700 reviews of which 622 were positive and 78 were negative resulting in a rating of 8.4 out of 10. Currently offered at a significant 90% discount, this title has earned the #6 position in the best deals for games like Oh...Sir! Prototype.
8.4
622
78
-90%
9.99€
1.06€
7. Drawful 2
Similarity 48% 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 game developed and published by . Released on June 20th 2016 has received 4,019 reviews of which 2,983 were positive and 1,036 were negative resulting in a rating of 7.2 out of 10. Currently offered at a significant 97% discount, this title has earned the #7 position in the best deals for games like Oh...Sir! Prototype.
7.2
2,983
1,036
-97%
9.99€
0.32€
8. Quiplash
Similarity 50% 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 2,188 reviews of which 1,962 were positive and 226 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 88% discount, this title has earned the #8 position in the best deals for games like Oh...Sir! Prototype.
8.6
1,962
226
-88%
9.99€
1.29€
9. Divekick
Similarity 47% 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! Divekick is a fighting, indie and 2d fighter game developed and published by Iron Galaxy Studios. Released on August 20th 2013 has received 1,818 reviews of which 1,522 were positive and 296 were negative resulting in a rating of 8.0 out of 10. Currently offered at a significant 87% discount, this title has earned the #9 position in the best deals for games like Oh...Sir! Prototype.
8.0
1,522
296
-87%
3.99€
0.52€
10. ROCKETSROCKETSROCKETS
Similarity 50% ROCKETS fire ROCKETS at ROCKETS in this action-arcade, arena-combat, gorgeous festival-of-fireworks! It's dogfighting meets figure-skating in space with local multiplayer and single-player fast-paced action modes plus a ZEN MODE where ROCKETS learn to LOVE. ROCKETSROCKETSROCKETS is a indie, action and casual game developed by Radial Games Corp, Loren Bednar, Dr. Kimberly Voll and Lindsay Jorgensen and published by Radial Games Corp. Released on May 01st 2015 has received 544 reviews of which 405 were positive and 139 were negative resulting in a rating of 7.1 out of 10. Currently offered at a significant 87% discount, this title has earned the #10 position in the best deals for games like Oh...Sir! Prototype.
7.1
405
139
-87%
6.99€
0.93€
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 June 16th 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. NGU IDLE
Similarity 51% NGU Idle is a Free To Play Idle game that's full of weird humor, tons of upgrades and hundreds of hours of content! Try out NGU Idle today and experience the joy of Numbers Going Up! NGU IDLE is a free to play, idler and indie game developed and published by 4G. Released on October 01st 2019 has received 12,068 reviews of which 11,564 were positive and 504 were negative resulting in an impressive rating of 9.3 out of 10. With 3,270 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Oh...Sir! Prototype.
9.3
11,564
504
3,270
players
2. Idling to Rule the Gods
Similarity 46% Idling to Rule the Gods is a free to play Idle-Game with a lot of content and some Minigames. Depending on your play-style, you can play it fast or slow. Either way it can be fun for hundreds of hours! Idling to Rule the Gods is a free to play, indie and simulation game developed and published by Shugasu GmbH. Released on May 27th 2016 has received 1,916 reviews of which 1,638 were positive and 278 were negative resulting in a rating of 8.2 out of 10. Thanks to its free to play tag and a daily player base of 1,065, this game has secured the #2 spot in the ranking of free games like Oh...Sir! Prototype.
8.2
1,638
278
1,065
players
3. Satisfactory Modeler
Similarity 64% Model your Satisfactory builds. Set up your machines however you like, adding optional limits to the number of any of those machines and the tool will calculate how the parts will flow and how many of each machine type are getting used. Satisfactory Modeler is a free to play, indie and simulation game developed and published by David Price. Released on September 17th 2024 has received 849 reviews of which 825 were positive and 24 were negative resulting in an impressive rating of 9.1 out of 10. Thanks to its free to play tag and a daily player base of 676, this game has secured the #3 spot in the ranking of free games like Oh...Sir! Prototype.
9.1
825
24
676
players
4. Poker Championship
Similarity 55% Play the most authentic Texas Hold’em Poker App. Fair play guaranteed by the officially certified Random Number Generator implemented for every hand dealing. Compete with outstanding players throughout the world in real time and be the World Champion! Poker Championship is a free to play, indie and massively multiplayer game developed and published by BBstudio Inc.. Released on September 25th 2019 has received 2,522 reviews of which 2,030 were positive and 492 were negative resulting in a rating of 7.8 out of 10. Attracting a solid base of 244 players due to its free access, this strategy game has achieved the #4 position in the best free games like Oh...Sir! Prototype.
7.8
2,030
492
244
players
5. The Jackbox Megapicker
Similarity 46% The Jackbox Megapicker is a game launcher for all of your Jackbox games. This free bit of software will allow you to launch all owned games from one convenient location. This means that you will no longer need to switch between Party Packs to start playing the games you love most. The Jackbox Megapicker is a free to play, utilities and party game developed and published by Jackbox Games and Inc.. Released on July 29th 2024 has received 706 reviews of which 539 were positive and 167 were negative resulting in a rating of 7.3 out of 10. Attracting a solid base of 224 players due to its free access, this strategy game has achieved the #5 position in the best free games like Oh...Sir! Prototype.
7.3
539
167
224
players
6. Cube Racer
Similarity 46% Cube Racer is a round based multiplayer racing game with cubes. Every round, all players race against each other to the finish line. Before every round, the players get to build one or more obstacles on the map. In the next round, all players have to pass all the obstacles, which have been built yet. Cube Racer is a indie, action and casual game developed and published by Simon Blasen. Released on October 30th 2017 has received 1,980 reviews of which 1,791 were positive and 189 were negative resulting in a rating of 8.6 out of 10. Attracting a solid base of 223 players due to its free access, this strategy game has achieved the #6 position in the best free games like Oh...Sir! Prototype.
8.6
1,791
189
223
players
7. Time Clickers
Similarity 47% Time Clickers is what's called an 'incremental game'. There's always a fun upgrade to look forward to, and the numbers keep getting bigger! Hire a team to fight for you, even when you're offline! Time Clickers is a clicker, free to play and casual game developed by Proton Studio Inc and published by . Released on July 23rd 2015 has received 5,048 reviews of which 4,420 were positive and 628 were negative resulting in a rating of 8.5 out of 10. Attracting a solid base of 129 players due to its free access, this strategy game has achieved the #7 position in the best free games like Oh...Sir! Prototype.
8.5
4,420
628
129
players
8. Picross Touch
Similarity 48% Find the hidden image in this fun and addictive logic puzzle game. All puzzles have unique solutions, ensuring 100% logically solvable puzzle grids. Picross Touch is a puzzle, free to play and casual game developed by Jon Gallant and published by jgallant. Released on August 24th 2016 has received 1,691 reviews of which 1,595 were positive and 96 were negative resulting in a rating of 9.0 out of 10. Attracting a solid base of 102 players due to its free access, this strategy game has achieved the #8 position in the best free games like Oh...Sir! Prototype.
9.0
1,595
96
102
players
9. IOSoccer
Similarity 51% IOSoccer is a free non-commercial competitive third-person online multiplayer soccer game that offers unparalleled freedom in ball control and gameplay depth. IOSoccer is a free to play, sports and multiplayer game developed and published by IOSoccer Team. Released on June 08th 2018 has received 2,809 reviews of which 2,287 were positive and 522 were negative resulting in a rating of 7.9 out of 10. The game currently holds the #9 spot among the most played free games like Oh...Sir! Prototype.
7.9
2,287
522
94
players
10. Zero-K
Similarity 46% With 100+ truly unique units, Zero-K is an RTS of freedom and creativity, tempered by a decade of refinement. Sculpt land into a castle and throw invaders off it with a Jugglenaut. Explore a massive campaign, solo or co-op. Hop online for epic 32 player battles or fast paced 1v1, on 100s of maps. Zero-K is a strategy, free to play and rts game developed and published by Zero-K Team. Released on April 27th 2018 has received 3,922 reviews of which 3,678 were positive and 244 were negative resulting in an impressive rating of 9.0 out of 10. The game currently holds the #10 spot among the most played free games like Oh...Sir! Prototype.
9.0
3,678
244
93
players