Games like OSTM

Note: The "DEMO" version is the same as the full game and will remain identical in future updates. It will always be free to enjoy the game (and learn biology), but purchasing the full game to support the developers is also welcome. Explore the CellEmbark on an adventure inside an algal cell. Journey through its expansive microscopic world, uncover hundreds of proteins. Jump, fight,… If you enjoyed this game, see our list of games similar to Meowtabolism - Examining Feline Behavior within Unicellular Algae.

Switch between two fractured worlds, overcome deadly traps, and uncover the truth hidden behind a broken reality. If you enjoyed this game, see our list of games similar to INVERT: The Fracture.

A modern-day narrative mystery where you explore a seemingly ordinary laptop to uncover hidden layers of conspiracy, surveillance, and stolen data, blending investigative gameplay with branching choices and a grounded tech-thriller tone. If you enjoyed this game, see our list of games similar to Project NexOS.

Hunt the prime. Nothing else scores. An old system is waking up, and it only answers to primes. Chain number tiles to hit the target prime before your moves run out. A strategic number puzzle from a solo indie game studio. Simple to learnChain two or more adjacent tiles. Equal numbers add up, different numbers subtract, and the result lands on the last tile of the chain. Score now, or build bi… If you enjoyed this game, see our list of games similar to Prim3 Hunt.

Fair from Past — a pixelated psychological horror Step into the world between lives. You awaken in a sub-reality — a liminal system of passage, where something went wrong. Your journey is not simple escape: it is a slow, irreversible descent through seven layers, each distorting reality in its own way. Core Idea The game combines procedural room generation with heavy atmosphere: here, fear come… If you enjoyed this game, see our list of games similar to Fear From Past.

66%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:grinding, optimization

67% User Score Based on 192 reviews

Critic Score 63%Based on 3 reviews

Explore the birth of sapient AI in this atmospheric hacking adventure set in the sprawling world of Recompile. If you enjoyed this game, see our list of games similar to Recompile.

59%Game Brain Score

Most mentioned positive aspects:music, humor

Most mentioned negative aspects:gameplay, graphics

83% User Score Based on 23 reviews

Unique procedurally generated city-building strategy / action game with single player campaign story. Inspired by Tron, Darwinia, Anno, Settlers etc. If you enjoyed this game, see our list of games similar to Hexters.

85%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:gameplay, replayability

85% User Score Based on 135 reviews

After living for generations as persecuted refugees, the Letarri people set their sights on a far-off planet as a promising new home. But when the interstellar mission to colonize the new world goes terribly awry, the fate of their people falls into the hands of a lone adventurer. Now it's up to you to unravel the mystery of what happened. Can you save them and their mission, or is it already too … If you enjoyed this game, see our list of games similar to Prominence.

Overview After a tragic accident, the kingdom’s magical energy core exploded. The resulting blast shattered the realm and hurled its fragments into the sky, where they now remain suspended in time. CrownFall was developed as a learning project within three weeks (June 17 - July 10). It tells the symbolic story of a fallen king striving to reclaim what was lost — both his world and his strength. … If you enjoyed this game, see our list of games similar to Crownfall.

This title is in early access and will become open source, 1 year after full release which feature the experimental combat system that was cut last minute for showcase in Capcon at SAIT (South Alberta Institute of Technology) and will include a total of 5 missions. Eclipse0 or Eclipse is narrative driven game  powered by RPG Maker MZ. It is the classic tale of the chosen hero going threw the te… If you enjoyed this game, see our list of games similar to Eclipse0.

72%Game Brain Score

Most mentioned positive aspects:graphics, gameplay

Most mentioned negative aspects:grinding, story

72% User Score Based on 269 reviews

Join Pixel as he quests through gaming history, teleporting across the most iconic video game systems of generations past. He’ll have to jump, dodge and play smart if he wants to survive all the traps, puzzles and enemies waiting to take him down at every turn. If you enjoyed this game, see our list of games similar to Life of Pixel.

94%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:story, grinding

94% User Score Based on 64 reviews

Relive the PC shareware era in this run n' roll, retro platformer! As the last remaining polyroll, you must run, jump, roll, float, and bomb your way through bizzare environments to defeat the evil Kaiser Kiwi. If you enjoyed this game, see our list of games similar to Polyroll.

A compact, exploration-driven metroidvania. Venture across a mysterious island and recover five fragments of a fallen meteor containing a rare and powerful mineral. If you enjoyed this game, see our list of games similar to Savage Horizons.

   ⚠️ WarningThis game is the work of a single first-time indie developer. Thanks to the feedback I've received from players, I feel it's important to let you know that this experience may make some people uncomfortable. The game explores psychological themes and is intentionally designed to create a sense of unease. If you're particularly sensitive to psychological manipulation, having your dec… If you enjoyed this game, see our list of games similar to Don't Click The Flower.

Call of the Lake focuses on atmosphere, sound design, and storytelling rather than frequent jumpscares. This is a short story-driven experience that takes around 1 hour and 30 minutes to complete. The game also features atmospheric video sequences created специально for the project — the same ones you can see below on the Steam page. They are seamlessly integrated into the narrative and enhance… If you enjoyed this game, see our list of games similar to Call of the Lake.

Stabilize the loop. Break the cycle. Back To Cycle is a retro-futuristic narrative puzzle where short, tense runs combine varied panels with a slow-burn story told through terminals, glitches, and visual cues. Each reset reveals fragments of truth while anomalies distort time and lock systems, demanding quick choices and calm execution. You are not just another operator—you are the one who … If you enjoyed this game, see our list of games similar to Back to Cycle.

Green Piece is a fast-paced 2D platformer shooter where you play as a post-apocalyptic cleaning robot armed with a powerful water jet. Purify corrupted areas, defeat infected enemies, and rescue trapped animals from ancient monuments. Clean. Jump. Shoot. Save the world, one drop at a time. How to Play Green Piece is a short, energetic arcade platformer split into two levels: Level 1 A … If you enjoyed this game, see our list of games similar to Green Piece.

79%Game Brain Score

Most mentioned positive aspects:story, music

Most mentioned negative aspects:grinding, stability

79% User Score Based on 1,024 reviews

Critic Score 79%Based on 26 reviews

The retro-futuristic pixel game Explore and fight in a retro-futuristic world. Swim deep into a oneiric, poetic and unique experience across dimensional planes. The aesthetic of the game was inspired by retro pixel adventures (Castlevania, Another World, Double Dragon) with a modern touch (Superbrothers, Sword and Sorcery) and an 80s plot homage (Ready Player One, He-Man, The Last Starfighter), … If you enjoyed this game, see our list of games similar to Narita Boy.

78%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:music

80% User Score Based on 174 reviews

Critic Score 72%Based on 4 reviews

Ereban: Shadow Legacy is a fast-paced stealth platformer game where you become Ayana, the last descendant of a forgotten race. Harness mystical shadow powers, high-tech gadgets and avoid or kill to uncover the truth about your past and the key to saving a dying, morally grey universe. If you enjoyed this game, see our list of games similar to Ereban: Shadow Legacy.

93%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, replayability

93% User Score Based on 708 reviews

In this exploration-heavy 2D action game, use your demon sword to interfere with the past, create platforms, and shield yourself from danger to explore a dystopian cyberpunk world depicted in gorgeously animated pixel art. If you enjoyed this game, see our list of games similar to BLADECHIMERA.

69%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:stability, replayability

70% User Score Based on 194 reviews

Critic Score 67%Based on 7 reviews

Boti: Byteland Overclocked combines classic 3D platforming with a splash of innovation. Double jump, dash, hover, and glide through vibrant levels, discovering fantastic combos inspired by the very essence of computers and technology.Enjoy the pure delight of gaming together in our drop-in, drop-out co-operative mode. Bond with a friend on your quest to save Byteland, with the gameplay seamlessly … If you enjoyed this game, see our list of games similar to Boti: Byteland Overclocked.

80%Game Brain Score

Most mentioned positive aspects:story, music

Most mentioned negative aspects:gameplay, grinding

80% User Score Based on 122 reviews

Critic Score 80%Based on 2 reviews

Tardy is a quest about fiddling with computers, terminals gadgets and other hi-tech scrap of all sorts. Deal with crazy machines, solve the mystery of the crew disappearance and help Ramto to come back home! If you enjoyed this game, see our list of games similar to Tardy.

83%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:replayability, grinding

91% User Score Based on 1,784 reviews

Critic Score 76%Based on 16 reviews

A dark comedy about the creators of unfinished games, starring James Urbaniak (Venture Bros, American Splendor), Stephen Russell (Thief Series, Skyrim), Ashly Burch (Borderlands 2, HAWP), Karen Dyer (Resident Evil 5) ... and YOU. Can you out-think the game gods? Can you ship a game from the inside? If you enjoyed this game, see our list of games similar to The Magic Circle.

75%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

86% User Score Based on 201 reviews

Critic Score 62%Based on 8 reviews

Deep underground lies a reminder of Boarkind’s darkest hours. All it takes is one little boar to dig it back up. Harkening back to the NES era, Full Bore is an open-world puzzle game that leaves you to your own devices. With curiosity as your only guide, you will figure out how the blocks around you behave, delve deeper into a strange underground, and eventually piece together the story of a wor… If you enjoyed this game, see our list of games similar to Full Bore.

89%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:replayability, stability

89% User Score Based on 331 reviews

Critic Score 89%Based on 1 reviews

Far into the future, in the year 1999: David, a systems operator, runs from his troubles by taking a job on a space station. After arriving, his mundane work turns into a struggle for his very life as he makes a shocking discovery. If you enjoyed this game, see our list of games similar to Titan Station.

A long-term crunch time programmer entered the world of code, and became a green cursor. Knowing that the condition for getting off work is to find 4 bugs in the code world, the adventure begins... If you enjoyed this game, see our list of games similar to CrunchTime.

68%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

68% User Score Based on 197 reviews

Critic Score 68%Based on 1 reviews

A young adventurer Hugh Radcliff is in pursuit of one of the greatest mysteries of history: The Lost Colony. Deal with pirates, dive into native rituals, reveal conspiracies, and make tough choices on your difficult journey for unveiling this mystery! If you enjoyed this game, see our list of games similar to Crowalt: Traces of the Lost Colony.

70%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:grinding, character development

73% User Score Based on 219 reviews

Critic Score 66%Based on 9 reviews

It’s 2062. Tina – a 9 years old orphan – lives with SAM-53 – her big clumsy robot guardian – on a rooftop makeshift shelter in Neo-Berlin, a dark megalopolis controlled by corporations. If you enjoyed this game, see our list of games similar to ENCODYA.

64%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:graphics, music

74% User Score Based on 34 reviews

Critic Score 67%Based on 6 reviews

A Pixel Story is a devious 2D puzzle platformer that charts the evolution of video games. You must use your Magical Teleportation Hat to explore 6 increasingly detailed zones on your quest to reach the core of The System to stop the evil OS and save the world. If you enjoyed this game, see our list of games similar to A Pixel Story.

73%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story

93% User Score Based on 29 reviews

Put on a lizard and go for an adventure! Six different ones are scattered across the land, each with a special ability. Carefully hop your way to the top of an active volcano. Surf down a surging river. Swim an underwater lake. Ascend a snowy mountaintop. Can you unravel the mysteries of Lizard? If you enjoyed this game, see our list of games similar to Lizard.

62%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:grinding, stability

70% User Score Based on 40 reviews

Help Alice find some answers as she joins a unique bunch of scientists, oddballs and theorists at a remote hilltop research facility to investigate some puzzling stone carvings. A single player puzzle/platform game about science and curiosity presented in a modern pixel art style. If you enjoyed this game, see our list of games similar to The Moonstone Equation.

92%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:grinding, stability

92% User Score Based on 5,517 reviews

Critic Score 95%Based on 2 reviews

Single Player, HD (High Definition). Manipulate the flow of time. Rescue the Princess. Contemplate the world; save yourself. The full version of Braid allows you to visit all the worlds, and thus use all the time-manipulation powers. Perhaps you will find the Princess and rescue her. There are no refunds for this item. For more information, see www.xbox.com/live/accounts If you enjoyed this game, see our list of games similar to Braid.

77%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:graphics, music

77% User Score Based on 61 reviews

You are dying. Oxygen level in your brain drastically drops down. You are seeing all your life, flashing before your eyes. You are no longer on earth. You are unconscious. For everyone else this is the matter of seconds, but for you this is taking forever. If you enjoyed this game, see our list of games similar to Clinically Dead.

404Rander is an experimental sci-fi psychological horror adventure blending a simulated 2D desktop with 3D semi-open exploration. Search through files, memories, and fractured virtual worlds to uncover the truth behind your late wife's death—and decide whether some truths are better left buried. If you enjoyed this game, see our list of games similar to 404漫游者.

Terminal Velo.City Terminal Velo.City is a minimalist, Matrix-inspired infinite runner, with Global Leader Board, developed as part of a game portfolio project by Yunuen Vladimir (StudioSuperStudio). This project is designed to showcase my abilities in game development, programming, design, sound, and interactive systems as I transition professionally into the video game industry. You can explor… If you enjoyed this game, see our list of games similar to Terminal Velo.City.

A psychological survival horror about a former soldier who goes to an abandoned psychiatric hospital in search of his missing sister. Explore dark corridors, solve puzzles, uncover secrets of the past, and decide how far you're willing to go for Lana. If you enjoyed this game, see our list of games similar to Nosophobia.

Awaken the memories of a forgotten world.Sleeping Dragon is a cozy puzzle adventure set in vibrant diorama levels, blending the whimsical charm of animes with clean, low-poly aesthetics. Take on the role of Hiru, a young traveler lost in the Dream Lands. To find your way home, you must explore the realm of the Great Sleeping Dragon. With the guidance of your quirky companion, the Cuckoo Cucko-Pee… If you enjoyed this game, see our list of games similar to Sleeping Dragon.

Nihariely’s Spatial Adventure is a pixelart game mixing arcade gameplay, exploration, resource management and puzzles, it is all about the rescue of a civilization collecting master processors. If you enjoyed this game, see our list of games similar to Nihariely’s Spatial Adventure.

Play and create custom levels of Croc's World! You can publish them on the internet and other players can play them as well! Crocs World Construction Kit features 4 different Settings and numerous tiles that can be used to create your own levels! Share them if you like via internet and let other people play your levels! If you enjoyed this game, see our list of games similar to Croc's World Construction Kit.

89%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, replayability

89% User Score Based on 605 reviews

Luna Abyss is a single player story driven action-adventure with fluid platforming and bullet hell combat. Follow the journey of Fawkes, a prisoner of Luna caught between a cryptic prophecy and their prison sentence. If you enjoyed this game, see our list of games similar to Luna Abyss.

43%Game Brain Score

Most mentioned positive aspects:story, atmosphere

Most mentioned negative aspects:gameplay, graphics

69% User Score Based on 13 reviews

A cursed collection of 10 retro horror games, each with its own genre and style, from FPS and platformers to turn-based RPGs and arena combat. Play solo or with friends as you uncover the secrets of a forgotten ROM corrupted by time... and something worse. If you enjoyed this game, see our list of games similar to Haunted ROM: The Lost Cartridge.

94%Game Brain Score

Most mentioned positive aspects:graphics, story

Most mentioned negative aspects:stability

94% User Score Based on 94 reviews

FEATURES: A retro love letter to the Metroid series, with a few quality of life adjustments, such as teleporters, rechargeable ammo, item collection tracking by area, and more Discover journal entries hidden throughout the facility, explaining the grim fate of humanity and its war against the galaxy Uncover the nature of the main character and their role in the conflict Collect and upgrade po… If you enjoyed this game, see our list of games similar to Ex Vitro.

14%Game Brain Score

Most mentioned positive aspects:emotional

Most mentioned negative aspects:graphics, stability

20% User Score Based on 20 reviews

Collect all candies during the game, avoid saws, spikes and falling to abyss - you will help main character come back home and Save the Halloween for his family! If you enjoyed this game, see our list of games similar to Save the Halloween.

66%Game Brain Score

Most mentioned positive aspects:story, atmosphere

Most mentioned negative aspects:gameplay, graphics

78% User Score Based on 36 reviews

The Basilisk is a genre-swapping horror platformer that focuses on you, a supercomputer, as the last hope to save mankind from an unknown virus. If you suffer from mental health issues, play at your own risk. If you enjoyed this game, see our list of games similar to The Basilisk.

96%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:grinding, replayability

96% User Score Based on 110 reviews

Super Cable Boy is a retro inspired platformer, where you are playing a living handheld gaming system with a power cord. Collect game cartridges to become more powerful and take on your quest to defeat "the Glitch". If you enjoyed this game, see our list of games similar to Super Cable Boy.

83%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:character development, grinding

84% User Score Based on 368 reviews

Critic Score 80%Based on 1 reviews

The legendary Knytt series continues with Nifflas’ latest creation; Knytt Underground. In this Knytteration; humans have long since abandoned the planet after practically destroying it in a war, five hundred years ago. If you enjoyed this game, see our list of games similar to Knytt Underground.

83%Game Brain Score

Most mentioned positive aspects:music, gameplay

Most mentioned negative aspects:story, grinding

83% User Score Based on 337 reviews

Qbeh-1: The Atlas Cube is an atmospheric 1st-person puzzle platformer by Liquid Flower that takes players on an inspired quest through a variety of divergent worlds, each filled with new mysteries and secrets to uncover. In each world, players find special cubes that must be collected and used to navigate to the next portal. Some cubes will simply be used as stepping stones to new areas while othe… If you enjoyed this game, see our list of games similar to Qbeh-1: The Atlas Cube.

84%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:monetization

84% User Score Based on 82 reviews

Fumiko! is a story-driven, artistic platformer that is not ashamed of being weird and unique. You are an artificial intelligence named Fumiko. You managed to escape the testing grounds and voices are telling you where to go. A surreal world is unfolding. Everything is unknown to you in a dystopian network of 2080. In this single-player, story-driven game you'll enter a rabbit hole. The network i… If you enjoyed this game, see our list of games similar to Fumiko!.

95%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:music, replayability

95% User Score Based on 427 reviews

Muri is a DOS-style shooter from Remar Games and Ludosity. After the colonization of Mars, a team of scientists design an armor suit of cataclysmic power, sparking a conflict between several factions. When Mars suddenly vanishes, one woman sets out to discover the fate of humanity. Inspired by the games of its time, Muri is an authentic '80s experience, with the focus often changing between run-a… If you enjoyed this game, see our list of games similar to MURI.

84%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, replayability

84% User Score Based on 232 reviews

Ghostware is a retro-fps combining the lore-heavy plot and exploration of adventure games with the fast action of '90s shooters. You and other ghosts have been trapped inside an arena FPS created by a wizard's unwillingness to overcome his nostalgia. Escape the past, shoot your way out. If you enjoyed this game, see our list of games similar to GHOSTWARE: Arena of the Dead.