Top similar games like Dum-Dum:
Dum-Dum $14.99
Travel back to 1985 to discover more about the self-proclaimed “greatest operating system of all time." Navigate the weird quirks of Hogo OS 1985 Edition, solve puzzles, play mini-games, and unravel the story behind why this one-time cutting edge computer system was mysteriously lost to time.
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Kaze and the Wild Masks$14.99
Go on a journey as Kaze in this 90’s classics inspired platformer. When the Crystal Islands get cursed, Kaze needs to save her friend Hogo while facing enraged living vegetables. Find the Wild Masks to unleash the powers of the legendary guardians and master land, sky and sea.
Loading Screen SimulatorFREE
A game about never-ending problem of loading screens. We've all experienced it while playing games, while downloading something, while installing an operating system ect. And now you can experience it once again in Loading Screen Simulator: Steam edition
Nelly Cootalot: Spoonbeaks Ahoy! HD$1.99
Nelly Cootalot is the stupidly named pirate adventurer with a heart of gold. Uncover corruption and wanton punning in this HD revival of a classic freeware adventure game.
Automata Streetcar$3.99
An interactive, digital-media art project that uses historic streetcars as a metaphor to explore ideas about connection, communication, and community. The project is primarily intended for gallery / museum installations - this home-play edition is for personal, non-commercial use only.
OneShot: World Machine Edition$9.99
A completely self-contained portable version of one of the highest user-rated games. Built on an entirely new engine with new UI, support for Steam Deck, & more. Features world-bending puzzles, intriguing denizens, surreal environments, and a captivating story about the truth of the game's reality.
Space Engineers$19.99
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.
Cellular Harvest$6.99
A lo-fi game about photographing aliens so that your employers can turn them into toothpaste. Explore. Photograph. Catalog. Harvest.
Sunray OS$5.99
You just bought a PC, only to discover it once belonged to someone who has mysteriously disappeared. You soon realize that the key to find him may be hidden deep inside your OS, governed by a weird chatbot named Zippy. What will be your first move?
TRI: Of Friendship and Madness$14.99
Find a way through the towers and dungeons of TRI by solving puzzles, climbing impossible ascents and reflecting light-rays. The mystical TRI will let you create your own paths in this strange world – just try not to lose your mind when you're falling upside down!
MO:Astray$14.99
MO: Astray is a pixel art, side-scrolling, action-platformer. Lead MO through mind-bending puzzles using special abilities. Bizarre enemies, threatening traps and ingenious level designs await.
DiyMachinery （自定义机械）$0.99
DiyMachinery is Physics game.Build complex and interesting machines to accomplish tasks. If you like research, don't miss it.
Uncle Chop's Rocket Shop$19.99
Come on down to Uncle Chop’s Rocket Shop, for all your roguelite spaceship repair simulation needs! WARNING: Untested genre not suitable for people with tentacles for arms or an aversion to dying horrifically. Side effects include improved reading comprehension under pressure and a furry fetish.
Phantom-OSFREE
Phantom-OS is a physics-infused strategic hacking simulator where you will put your skills and wits to the test.
CHAQS$9.9
CHAQS is an instructive CTF (Capture The Flag) game that performs the basic functions of an operating system. While it meets your expectations from an operating system to a certain extent with the applications it contains, CHAQS progresses in the direction of more challenges in terms of gameplay.
Dungeon of the ENDLESS™$11.99
Dungeon of the ENDLESS™ is a Rogue-Like Dungeon-Defense game, in which the player and their team of heroes must protect the generator of their crashed ship while exploring an ever-expanding dungeon, all while facing waves of monsters and special events as they try to find their way out...
VSCS-II$9.99
VSCS-II is a retro-styled narrative game about privacy and security. Using an upgraded '80s operating system, navigate an underground network to make connections, unearth conspiracies, and ultimately decide the fate of the dark web.
Fallen: A2P Protocol$9.99
A post-apocalyptic, turn based, tactical combat and strategy game where you lead your caravan on a quest for revenge.
Shadowrun: Hong Kong - Extended Edition$19.99
Shadowrun: Hong Kong - Extended Edition is the capstone title in Harebrained Schemes' Shadowrun series - and now includes the all-new, 6+ hr Shadows of Hong Kong Bonus Campaign. Experience the most impressive Shadowrun RPG yet, hailed as one of the best cRPG / strategy games of 2015!
Mainlining$12.99
After MI7 has been hacked, your primary goal is to bring a cyber-criminal network to justice. Played entirely from your computer's desktop, Mainlining is a thrilling point and click hacking adventure that features a gripping narrative which will have you hooked from the very first case.
Galactic Command Echo Squad SE$9.99
Galactic Command Echo Squad SE is a high-end and very challenging space/planetary combat game. It offers a thrilling campaign, instant action combat sessions as well as a sandbox mode allowing you to explore the game's universe while battling hostile Insurgent forces among others.
Soul Axiom Rebooted$19.99
The new enhanced edition of Soul Axiom - a first-person story-driven adventure puzzle game, set in the beautiful, haunting cyber-world of Elysia. Collect unique hand powers, discover multiple endings and choose your own destiny as you unravel the mystery of your digital afterlife.
Ultimate ADOM - Caverns of Chaos$19.99
Experience the sequel of the traditional roguelike dungeon-crawling classic. Enjoy unlimited replayability through endless procedurally generated dungeons, countless monsters, grafting, crafting and a vast amount of skill trees. Journey into the ever changing depths of the Caverns of Chaos.
Dry Drowning$19.99
Dry Drowning is a psychological investigative visual novel set in a futuristic dystopian city. Follow the story of Mordred Foley, unscrupulous private detective haunted by his dark past, and look into a series of macabre serial killings inspired by Greek mythology.
Jigsaw Pieces - RomanceFREE
The puzzles in this special Valentine Edition are all about love. Choose from a great amount of romantic puzzles in HD-quality and adjust the way you would like to play to your own preference. You get to decide for yourself how many pieces your puzzle may contain.
Knights of Pen and Paper 2$7.99
Prepare to inhabit a world of chivalry, class warfare and off-beat pop references. Knights of Pen & Paper 2 is a turn-based, retro style, pixel-art adventure full of danger, intrigue, death, and saving throws!
Hard West$19.99
When a tragic turn of events sets one man down a path of supernatural chaos and revenge, he must brutally hunt down all those who wronged him. Fight and survive through 8 unique story-based scenarios, and try your hand at 40 individually designed turn-based combat missions
SanctuaryRPG: Black Edition$7.99
SanctuaryRPG: Black Edition is a humorous and strategic turn-based dungeon crawling ASCII adventure. Drawing heavy inspiration from both Roguelikes and Japanese RPGs, the game offers a robust action-RPG inspired combat system.
Snow Plowing Simulator$15.99
Experience the serene joy of snow plowing in this relaxing simulation game! Drive powerful plows, clear roads, and keep your town safe. Uncover a surprising story, face survival challenges, and tackle advanced weather systems. Embrace winter's chill and become the ultimate snow-clearing hero!
Crazy Otto$0.99
In 2016's CRAZY OTTO you and up to seven of your friends have a job to do: Run the maze, eat the dots, grab the cake, dodge the dinosaurs.Unless you are the dinosaurs, in which case you'd better eat CRAZY OTTO and his friends!
Doctor Xenophon's Laboratory$15.99
A sci-fi puzzle platformer game. Make your way through the abandoned laboratory solving puzzles left behind and avoiding the deadly enemies left in the halls. And of course, don’t fall into the abyss!
Transport Fever 2$39.99
The classic transport simulation genre has a new gold standard with Transport Fever 2. Discover a whole new world by navigating transport routes through land, water and air. May progress and prosperity find their way!
The Island: Into The Mist$9.99
'The Island: In To The Mist' is an adventure game. It includes basic features of adventure genre and add some new systems to interest you. You have been given a chance to experience a group of university students, who confined in the island. There is a terrific but interesting story you will see.
Tactical Breach Wizards$19.99
In Tactical Breach Wizards, you lead a team of renegade wizards in kevlar through turn-based battles to unravel a modern conspiracy plot. Combine their unique spells in clever ways, or rewind time to try every crazy plan you can think of to punch a Traffic Warlock through a 4th story window.
Utopia Colony$16.99
The year is 2033. You, an ex-Marine with little opportunities left, have signed up with Utopia Arura, a large mining corporation on Mars. They have sent you to a location they have proposed but you have chosen for mining. Everything else is up to you.
刻印战记2：七圣英雄$9.99
" Countermark2 Saga: Seven Sacred Heroes" is a 2D tactical strategy game and the sequel to "Countermark Saga Frozen sword." The game tells the adventurous story of a modern-day youth who travels through time.
FORWARD: Escape the Fold - Ultimate Edition$9.99
FORWARD: Escape the Fold - Ultimate Edition was created to be the perfect bitesized roguelike dungeon crawler. Choose your champion and face a relentless crawl through the card-based dungeons, collect items to power your abilities and defeat the gruesome monsters facing you. But keep going FORWARD!
Year Walk$5.99
In the old days man tried to catch a glimpse of the future in the strangest of ways.Experience the ancient Swedish phenomena of year walking through a different kind of first person adventure that blurs the line between two and three dimensions, as well as reality and the supernatural.
Space Crew: Legendary Edition$24.99
Time for your toughest mission yet! Recruit and train your crew to tackle the growing threat from alien and android armies as you defend Earth to become a Galactic Legend in Space Crew: Legendary Edition. All new content free to existing owners of Space Crew!
Corona Simulator$12.99
"Corona Simulator" is a sophisticated mixture of challenging strategy game and frighteningly detailed virus simulation. As a global pandemic leader, you must skillfully manage nations' resources, make tough decisions, and impose drastic measures to combat the deadly coronavirus.
Boundless$19.99
Shape your citizen, forge your destiny and sculpt your world in this epic voxel sandbox MMO built on endless possibility.
ShipOS 1994$12.99
Are you ready to recover your family's fortune and rebuild the greatest shipping empire the world has ever known? Well if you are, then you're going to need the latest integrated shipping management system to get you there. Welcome, to ShipOS 1994
Draw Souls$3.99
Draw Soul is a leisure tower defense game which is filled with creative and interactive elements. Players can create their own summoned creatures freely. In the Draw Soul’s vibrant world, the protagonist usually go out to explore, collect resources and develop freely during the daytime.At night, there will be enemies to invade.
Medieval Engineers$9.99
Medieval Engineers is a sandbox game about engineering, construction and the maintenance of architectural works and mechanical equipment using medieval technology. Players build castles; construct mechanical devices and underground mining. There is an entire planet to explore!
Backfirewall_$14.99
Hello and welcome to Backfirewall_, a first-person tragicomic adventure set inside a smartphone. You are the update assistant. Solve wacky puzzles to counter the update and save the previous operating system from deletion. The fate of the System is in your hands!
War Platform$6.99
play the role of the More than three big countries in the world This is a prediction simulation game for the current and future combat concepts According to the known technology of today's mankind
接头 / Contact Point$3.99
”QIKA”——A terrible spy training organization in the Soviet era.Players will play the secret agent of the Communist Party”Qin Zheng”.After receiving rigorous training,back to the already fallen Shanghai.After losing contact with the base area,under his leadership, the armed detachment fought alone in the "island" under the...
Bow to Blood: Last Captain StandingFREE
Become a Captain! Fly your ship and command your crew as you compete to become Champion in a winner-takes-all reality show. Build relationships and plot betrayals to avoid getting voted off the season and become the last captain standing. Optional VR support.
AmusemosFREE
Amusemos is a unique collection of games, toys, and apps based in a fictional operating system.
BONEWORKS$29.99
BONEWORKS is an Experimental Physics VR Adventure. Use found physics weapons, tools, and objects to fight across dangerous playscapes and mysterious architecture.
LETHAL STRIKE$8.99
LETHAL STRIKE has a motif of the fighter's dogfight and flight combat, with easy maneuverability and a sense of speed. the operating device can be played with the game pad or the keyboard.
The Smell of Death - A Tsugunohi Tale - STEAM EDITION$3.99
"Tsugunohi" creator ImCyan's former 3D dungeon horror film is now available on Steam. The game also features a battle mode against monsters, and if you complete the hard mode, which is new to the Steam version, a later story will appear. Can you escape safely from the "world of death"?