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Displaying 5300 - 5350 games out of 8693 games
One more!
One More Time
📅 Coming soon
Every second you drink, your chances of getting dizzy increases. Put down a mug to sober up. Try to outdrink everyone in Steam!
One Night on Halloween
Cult Shock Games
📅 Fall 2020
A black and white manga-style visual novel about high school, parties, crushes, best friends and bullies!
One Night Stand
Kinmoku
📅
After a night of fun, passion, and one too many drinks, you wake up the next morning to find a complete stranger lying naked beside you in bed. What do you do?
one night, hot springs
npckc
📅 30 Aug, 2018
Haru is invited by her old friend Manami to spend a night at the hot springs. All Haru wants to do is enjoy the hot springs like everyone else, but she doesn't want to cause any trouble...
One Pixel
Ireero
📅 1 Mar, 2021
2D platform game with minimalist pixel art graphics, create platforms and shoot a lot to defeat an army with more than 1,000 monsters. The game was made for people who like a challenge and don't mind dying several times.
One Pixel TWB
Ireero
📅 1 Oct, 2021
The two primordial colors of pixels start a war after years and years of "Peace", many things have happened in this castle that is now being attacked by larger forces, will you as the King of this city let them destroy everything that is yours?
One Ship Two Ship Redshift Blueshift
HYPYRYL
📅 Sep 23, 2015
Redshift Blueshift is a tournament-ready pong-like 2D shooter in which two pilots fight for glory in their variable paddle ships! Power up your shields, unleash a horde of drones and homing missiles on your opponent and keep the hyper-ball in play! Supports local multiplayer and single player vs AI.
One Small Fire At A Time
Kidalang
📅 Jun 10, 2016
13-year-old Janis has "Magic Deficiency Disorder," a madness where one can't use magic in a very magic-oriented world. For her protection, she lives in a madhouse: a place where those with mental disorders can be safe from an unforgiving society.
One Thousand Lies
Keinart Lobre
📅 Apr 24, 2016
One day, Ciarn starts receiving enigmatic emails from a mysterious sender, turning his everyday life into a mess of a romantic comedy with psychological themes mixed in. What lies beyond the mystery he's been presented with? In the words of Harry H.
One Way To Die: Steam Edition
CoaguCo Industries
📅 Sep 1, 2015
After waking from a terrifying dream of your own untimely death, you attempt to make your way to the Finnigan Brothers' Fun Park for its last day then back home again. It's like playing Russian roulette with five chambers loaded, but more frustrating.
One-Eyed Lee and the Dinner Party
DarkChibiShadow
📅 20 Dec, 2019
Help Beracus and Lee escape a cursed bunker (or die trying) in this point and click, visual novel hybrid.
Oneons
Deen Games
📅 2020
Oneons is a hard coffee-break roguelite. Explore 12 floors. Uncover dangerous enemies, each with unique abilities. Turn-based combat: fight or use your skills to blast enemies or heal. Balance exploration, energy, and combat. Die. Get stronger. Retry. Turn-based and easy to play, difficult to master
OneShot
Little Cat Feet
📅 8 Dec, 2016
OneShot is a surreal top down Puzzle/Adventure game with unique gameplay capabilities. You are to guide a child through a mysterious world on a mission to restore its long-dead sun. The world knows you exist.
Onii-chan Asobo
ilシ
📅 Jan 2019
"Let's play Onii-chan" is a Slice of Life/Eroge Kinetic Novel about a developer of AO-rated games and his younger sister, who wants to become a developer too and intends to learn by doing things.
Online Adult Content Manager
Kink Master Studios
📅 12 May, 2021
Online Adult Content Manager (OACM) manages and organises your online adult content. Save links to your favourite videos, images or any other content in one convenient location. The best way to organise your online adult content is now on Steam!
Only If
Creability
📅 Jul 25, 2014
Only If is a surreal first person adventure-puzzle game. It takes idiom into reality.
OnlyFuck - RuRu's Adventures
NSFW18 Games
📅 20 Jun, 2021
RuRu wants to make money and have fun at the same time! Join her in this simulation of the very popular OF platform!
Onsen Master
Waking Oni
📅 Fall 2020
Onsen Master is a hot spring customer management game where players must create ingredients to match the various customer ailments, across the fantasy island of Izajima!
Onward and Upward! DX
Travis Foster
📅 6 Feb, 2024
Climb from the Earth to the Moon to try and solve an urban legend! Brave tough challenges as you float and grapple your way up to the tune of a great soundtrack! Be sure to bring a space suit, and get climbing!
Open Hexagon
Vittorio Romeo
📅 2 Nov, 2021
Four buttons, one goal: survive. Are you ready for a real challenge? -- Become the best and climb the leaderboards in Open Hexagon, a fast-paced adrenalinic arcade game that's easy to learn but hard to master!
OpenTTD
OpenTTD
📅 1 Apr, 2021
OpenTTD is a business simulation game in which players earn money by transporting passengers and cargo via road, rail, water, and air. It is an open-source remake and expansion of the 1995 Chris Sawyer video game Transport Tycoon Deluxe.
Operation Octo
Klub Kofta Studio
📅 July 2025
Play as an Octopus scientist fighting off sunken skeletons in this frantic aquatic Tower Defense! Discover sea life turrets from unique biomes: Pistol Shrimp! Navy Seal! Death Ray! Deploy turrets whilst dodging enemy bullets as you venture the seven seas!
Operation Sexy Sudoku
Operation Sexy Sudoku
📅 Q4 2021
Solve puzzles to release two dimensional girls from their misty curse. Gather your team of mental gymnasts to aid you on your quest. Bring your friends to tackle unlimited variations of sudoku puzzles.
Operator Overload
Benn Powell
📅 Q4 2016
Operator Overload is a new puzzle game by indie game creator Benn Powell. Solve your way through over a hundred levels of complex combinatoric conundrums using your logical deduction and problem solving skills, and then create your own using the in-game level editor for others to enjoy.
Opollo
Planetary Gears
📅 Coming soon
Little Minimalist Arcade High Score Chaser with 200+ Vehicle combinations.
Oppai Muse
Oppai Reveal Studios
📅 18 May, 2020
Discover your perfect MUSE amidst music beats! This is a simple SUPER CASUAL rhythm game, full of colors and beauties! Collect stars and obtain HEARTS from women! Seek your path to the perfect date! Just remember - Girls will be listening. So don't step on her feet...
Oppai Puzzle L
GentleDriver
📅 21 Jul, 2022
It's been a busy day. Now, relax your body and come this way. Let the elder sister come to comfort your body after a long day
Oppai Samurai: Knocked up by a No Name Novice
Miel
📅 19 May, 2023
She's got the bounciest boobs and the juiciest ass he's ever seen, and he has the biggest cock she's ever laid eyes on. It's a match made in heaven as the legendary Oppai Samurai gets dicked down and trains to become an even more legendary cock sleeve!
Oppaidius Desert Island!
Vittorio Giorgi (SbargiSoft)
📅 27 May, 2021
W-w-w-whaaaaat...? I'm on a desert island, alone with Angela... NAKED...? Discover what happens next in this original visual novel!
Oppaidius Summer Trouble!
Vittorio Giorgi (SbargiSoft)
📅 10 Dec, 2018
An ecchi visual novel with a '90s retro vibe! It features original FM-synth music (Yamaha YM2151 sound chip), pixel art (PC-98) backgrounds, and yes, oppai!
Oppaidius Tropical Cruise!
Vittorio Giorgi (SbargiSoft)
📅 5 Dec, 2019
During a cruise trip you'll never forget, you meet a beautiful, famous female singer...! Play through this different from usual visual novel, with many bizarre characters and spicy situations!
Ops
Pete DeSimone
📅 August 2024
Defend Earth from hostile aliens and hungry chupacabras in this modern classic arcade game. Created by a couple of real life VLA Operators!
Opus 1 - Social Justice War
GoGirl Studio
📅 26 Jan, 2018
Shoot down fascists and free humanity from bigotry!
Opus Cortex: A Nonogram Puzzle Story
Rainier Interactive
📅 To be announced
Opus Cortex is a nonogram puzzle game with captivating story and a cast of wonderful characters. You are an AI who wakes up in an unknown location, your memory chip damaged and unreadable. In the meantime, the world faces great dangers. Will you find out what happened?
Opus Magnum
Zachtronics
📅 19 Oct, 2017
Opus Magnum is the latest open-ended puzzle game from Zachtronics, the creators of SpaceChem, Infinifactory, and SHENZHEN I/O. Design and build machines that assemble potions, poisons, and more using the alchemical engineers most advanced tool: the transmutation engine!
Opus Mortem
KZ42
📅 6 Jul, 2018
Play as the Death. Test your reflexes while trying to redirect souls to their respective destinations. Don't worry if it's a bit hard at the beginning, every work gets easier with time and experience!
Orange Santa
Anamik Majumdar
📅 8 Jan, 2021
Orange Santa is a 2D Christmas-Themed Platform Action game based on the story of Orange Santa who is in-charge of the distribution of the Christmas gifts among the children.
Orb Flo
Parrott Studios
📅 2 Oct, 2017
Orb Flo is a puzzle game comprised of a set of prisms and receptacles. A puzzle is considered solved whenever the orbs flow through all receptacles. Flow can be altered by toggling a prism on or off.
Orb Tower
Pierre Vandermaesen
📅 Q1 2025
A Roguelike Bubble Puzzler! Choose your school of magic and reach the top of the tower! Chill pick up and play feel and nostalgic pixel art and music. Get your staff and prepare to shoot orbastical spells !
Orbit HD
Brainchild
📅 Mar 18, 2015
Explore the cosmos as a comet, orbiting planets with a realistic gravity system and a backdrop of procedurally generated nebulae. Learn to use planetary gravity to your advantage, and relax in the ambience of space.
Orbital Challenge
Ghostshok
📅 May 2025
Roll, jump, and teleport your way through 10 challenging levels in this fast-paced physics platformer! Compete for the fastest time on global leaderboards!
Orbiz
Anoman Studio
📅 17 Feb, 2017
Orbiz is a local coop multiplayer game with rogue-like elements. The primary objective of the game is to engage in three levels of combat with various zombies on each spherical world before locating the portal to travel to the next one.
Orbstack
Jesus Rugarcia
📅 Q4 2024
Stack your cards to cast spells, get resources and recruit allies in OrbHand, a beautiful hand drawn card management game.
orbt xl
Nickervision Studios
📅 Coming Soon
Defy gravity in Orbt XL! A fast-paced, addictive, 'just-one-more-round' arcade score chaser. Stay in orbit, dodge obstacles, and rack up pointsthe closer you are to the black hole, the higher your score! Easy to learn, tough to master, and perfect for quick play sessions while waiting in queue.
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