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Displaying 2350 - 2400 games out of 3987 games
OCTOPTICOM
UP DEVELOPMENT LTD.
📅 3 Oct, 2018
OCTOPTICOM is an open-ended puzzle programming game about designing and optimizing optical computing devices. Use lasers, mirrors, filters and other components to read, transform and write sequences of colored squares.
OCTOPTICOM 3D
UP DEVELOPMENT LTD.
📅 November 2024
OCTOPTICOM 3D is a major upgrade to your favorite open-ended puzzle programming game about designing and optimizing optical computing devices. Featuring 3D graphics and gameplay, refined ui, rewritten simulation, all original levels and components plus new additions, histograms and more.
Octopus City Blues
Ghost in a Bottle
📅 Eventually
In a world of ice, the last human city is tearing itself apart. Explore the underbelly of a monstrous metropolis in a surreal adventure about everything and nothing.
Octopus Game
Zoryth Games
📅 21 Jun, 2022
A multiplayer game for up to 50 players to decide who will be the # 1.
Oculux
Logisk Studio Inc.
📅 March 1, 2021
A relaxing puzzle game with a beautiful and immersive atmosphere to sharpen your mind.
Odd Guy Meets Odd Farmers - BL Yaoi Visual Novel
ChaniMK
📅
Torin arrives at a rural community and meets three eccentric farmers. He finds them odd at first, but little does he know that they will become his best friends! Maybe even more if romance were to develop?! In the meanwhile, what kind of wacky adventures will these four get into?
Odyssey 2024
PopCornG
📅 2 Dec, 2024
combines the variety and depth of modern mechanics in the format of a classic arcade space shooter. Driving continuously and fighting against a group of deadly enemies
Off Grid
Semaeopus
📅 Early 2019
Scan, hack, engineer, win: manipulate the people and the world around you. OFF GRID is a stealth-hacking action-adventure where collecting data on characters is as important as avoiding their sightlines. Get to grips with the tech, and hack all the things. Data is your most powerful weapon.
Office Life
Cicada_Dancing
📅 29 Sep, 2023
"Office Life" is a visual novel for adults only. A young IT specialist Jake is looking for a job and gets a good offer. His boss turns out to be a hot and seductive woman. He strives to conquer her using different methods, even the most daring ones.
Office Management 101
tulevik.EU
📅 2019
Office Management 101 is a satirical office life simulation tycoon game set in a fictional capitalistic dystopia. Step over competitors, drive your staff to the limit and milk your customers for every penny in the pursuit of spiraling success!
Office Overloaded
Kuma Gee
📅 Q1 2025
Type quickly to process incoming documents without burning out. Sharpen your skills, climb up the ranks and challenge your coworkers around the globe. Can you stay cool under pressure and become the next CEO?
Office Perks: Act 1
Amomynous Games
📅 To be announced
A game dev's job is never easy, but it's a whole lot better when there are perks everywhere you look! Office Perks is a lighthearted slice-of-life visual novel loaded with playful dialog and lots of opportunites for the more intimate moments in the professional and personal lives of 20-somethings.
Offroad Truck Racing
Technologies&Simulators
📅 23 Jun, 2021
Offroad Truck Racing - innovation rally simulator offer a thrilling experience of track racing by replicating the unique challenges of driving through diverse landscapes.
Offworld Trading Company
Mohawk Games
📅 28 Apr, 2016
Mars has been colonized, and Earth's corporate titans fight to dominate this new market. Competition is fierce in this fast-paced economic RTS from Civilization IV Lead Designer, Soren Johnson.
Oh...Sir! The Insult Simulator
Vile Monarch
📅 Summer 2016
A Hilarious Insult-em up in which players must verbally take-out their friends and family in different game modes. Assemble witty insults using different word strings, and employ combos, criticals, continuations and more to battle your opponents both offline and online across multiple devices.
Oil Enterprise
Crafty Studios
📅 Apr 20, 2016
In Oil Enterprise, you enter the multi-million dollar business of black gold as a shrewd businessman. Accept the challenge and grow from a small-scale en-trepreneur, investing in your first oilfield, to a global oil magnate.
okey.gg
yilmaz.games
📅 April 2025
Turkish traditional games Okey and 101, are finally on Steam. Enjoy them with your friends or try to win competitive matches and reach the top level.
Old World
Mohawk Games
📅 Q2 2022
Old World is a revolutionary new historical strategy game where you lead your dynasty over generations of rule against rival kings and queens. Wage massive wars, manage your court, and build a dynasty or watch your empire crumble to dust. What legacy will you leave behind?
Oligopoly
Viny Game Studio
📅
Oligopoly is a strategy game where you have to set up the production, distribution and trade of various goods. Exploit natural resources, build factories and infrastructures, produce goods and distribute them using trucks, trains or ships.
OMEGA PATTERN - VISUAL NOVEL
Borokai Studio
📅 26 May, 2017
Omega Pattern is a Visual Novel which offers a variable multiple-choice decision system. This means that both the number of decision points and the number of choices or options that you will find in those decision points may vary according to your previous decisions during the game.
Omni
JackHasaKeyboard
📅 Coming soon
Omni is a game that teaches you how to program.
OmniBus
Buddy Cops, LLC
📅 May 26, 2016
OmniBus is next-to-last gen physics game about the most powerful bus in the universe that cant stop or even slow down for reasons incomprehensible to the simple human mind.
Omnos: The Endless Journey
Nemo
📅 Coming soon
Grow from a tiny particle into a cosmic force in this arcade-style level-up game. Absorb matter, gain abilities, and consume the universe in a fast-paced journey of endless growth and transformation.
OMON Simulator
Ukrainian Bears
📅 6 Sep, 2019
You are an officer in a special unit called OMON. Ensure the safety of citizens at rallies, protests and public actions. Take care of the protection of the first persons of superpowers.
OmOneko
TaleChaser
📅 2 Mar, 2025
A story about cat girls with bite. Nekos have evolved in the shadows of human society. Beautiful. Mysterious. Chaotic. And now, three of them live with you. Will you be able to get past the stigma and grow closer to them? OmOneko is a tale of cat and mouse... and rats.
On Cmnd
mathgeniuszach
📅 Coming soon
On Cmnd is a time attack arcade game where you follow a list of increasingly complex rules to determine which button on screen to press. There are 16 normal and 16 challenge levels to test your reflexes, as well as a custom level system for extra fun!
On Earth As It Is In Heaven - A Kinetic Novel
Afterthought Studios
📅 15 Nov, 2017
Sencil is a scribe in heaven that works for the God of Calamities. However, as he is kind of heart, he has repeatedly lowered or completely negated the casualties of disasters ordered by the God of Calamities. A kinetic novel that has about 3 hours worth of immersive writing!
On Key Up: A Game for Keyboards
Roppy Chop Studios
📅 Winter
Get to know your keyboard with this unique, physics-based puzzle game! Bounce, roll, paint, and even break objects with each press of a key.
On My Own
Chad Close
📅 Feb 26, 2016
Craft your own tools and manage your resources in this tranquil survival adventure. Charming naturescapes and original music frame your quest to conquer the mountain as you endeavor to make the most of your one wild and precious" life.
On My Own: New Frontier
Beach Interactive
📅 To be announced
Make your own way through the wilderness: build a cozy cabin or take your tent to discover more. Retro vibes and evergreen optimism ensoul this survival adventure featuring clever craftables, curious critters, and a handful of inspiring landmarks tucked away throughout.
On the front line
Alekseev
📅 18 Oct, 2016
"On the front line" - tank simulator. Action takes place during World War II. Battles are unilaterally - for the Red Army. Action in the game takes place on two large locations. Sequential execution of combat missions.
Once Upon an All Hallow's Eve
Ran
📅 18 Jan, 2017
What happens when a girl gets lost all alone in the woods and can only find the occupants of one mysterious mansion to help her?
One Last Chance
Last Lotus
📅 7 Apr, 2016
Do you remember that high school crush you never confessed your love to? Do you ever wonder what could have been if things had gone different back then? This short Visual Novel/Dating Sim explores those questions that we constantly ask ourselves.
One Lie
Wooden Donkeys
📅 Coming soon
One Lie is a choice-driven adult visual novel about a young man not having the best start to his adulthood. His best friend betrays him and he decides to start his life somewhere else. Will he find peace, love and new friendships? Of course, he will. With whom? That's up to you.
One Lonely Outpost
Aurorian Studios
📅 Early 2022 - Wishlist Now!
An alien world sometimes needs a farmers touch to bring it to life. In this sci-fi, colonization-life sim, terraform a barren world: turn wastelands into verdant landscapes while exploring, farming, building, and unlocking all the mysteries of this strange new planet.
One Manga Day
DeXP
📅 May 4, 2015
Manga are comics created in Japan. The problem for most people is, as they're made in Japan they're only produced in Japanese; someone has to translate them to English! Is one man able to accomplish this? Is there more to his team's relationships other than business?
One Million Worlds
Richard Tingle
📅 Mar 29, 2019
One Million Worlds is a block world, but unlike other block worlds it's not focused on buildings and architecture but on machines and movement. One Million Worlds is a blockworld with physics which means you can create things that not only look cool but are cool, because they work.
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 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 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 two three, four,
zou-gang or happy-zou
📅 Coming soon
Based on the cash you might actually have in real life. For example, 10,000. Enter it into the game to gamble. Based on your real thoughts about gambling in real life as a goal. For example, win enough 1,000,000. Bring the goal into the game to achieve the goal. After each failure, start again.
Oni Onsen
Y Press Games
📅 Coming soon
A gorgeous gay dating sim where you date hunky oni in feudal era Japan! The only way the cursed oni can get free from the onsen is by seducing the sexy samurai Asano! A yaoi, bara, bl, lgbtq+, queer visual novel!
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 Obsession
sourmilk
📅 Coming soon
Have you ever had an online friend? What if you were to meet them in real life? Can you be sure that nothing will go wrong? Find out in this horribly adorable experience.
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!
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 Deep Magic: Cryptanalysis
1013133 Simulations
📅 21 Jan, 2020
Reconnaissance operatives infiltrated a corporate building and extracted electronics and files encrypted with 56-bit DES. Items were handed over to you, the cryptanalyst. Your mission is to decrypt the files.
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!
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