Single-player games like Marpi OS
Below are 8 single-player Steam games similar to Marpi OS, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Marpi OS page.
Ranked picks
- 1

Figure Workshop2
Single-player alternative to Marpi OS — playable solo, no multiplayer required. Shares Simulation with Marpi OS.
【Figure Workshop2】 is a figure making simulator.Here you can design designs for your favorite characters and make them into your own collection.
- 2

FlowScape
Single-player alternative to Marpi OS — playable solo, no multiplayer required. Shares Simulation with Marpi OS.
In FlowScape you can create your own nature scene simply by painting. Choose from 20 landscapes and more than 300 models to create your own little paradise by painting trees, changing the sky, rotating the sun, adding sound effects and adjusting your camera for that perfect photo.
- 3

PatchWorld
Single-player alternative to Marpi OS — playable solo, no multiplayer required. Shares Simulation with Marpi OS.
PatchWorld is a social audiovisual playground for VR and desktop where creators build interactive worlds, instruments, reactive visuals, playful systems, and live experiences together in real-time _ no coding needed.
- 4

ST World
Single-player alternative to Marpi OS — playable solo, no multiplayer required. Shares Simulation with Marpi OS.
Discover ST World - the next-generation voxel world! Build stunning high-resolution sandbox worlds with easy-to-use tools and AI features. Explore Riftwalkers' open-world adventures and join a thriving community.
- 5

WorldMaker
Single-player alternative to Marpi OS — playable solo, no multiplayer required. Shares Simulation and Early Access with Marpi OS.
WorldMaker is a tool for creative users that allows you to create photorealistic 3D Worlds using drag-and-drop controls. Transfer ideas directly from your head to a 3D World in seconds. Utilize our library of 1400 objects to create 3D Worlds quickly, with graphics powered by next-gen Unreal Engine 5
- 6

AENTITY
Single-player alternative to Marpi OS — playable solo, no multiplayer required. Shares Simulation with Marpi OS.
AENTITY challenges you as an artist. Leaving my mind behind, the contours of the ego blur. Past the dream wall are no rules to break, there are playful moves to make, veiled visions to wake, unseen pictures to take.
- 7

Clip maker
Single-player alternative to Marpi OS — playable solo, no multiplayer required. Shares Simulation with Marpi OS.
Clip Maker is a creative tool for making videos, animations, visual novels, comics & VR scenes. Easy to use, packed with assets, and exportable in 4K, 8K, VR, GIF, and more.
- 8

SONGBOY: Play Music
Single-player alternative to Marpi OS — playable solo, no multiplayer required. Shares Simulation with Marpi OS.
SONGBOY is a musical sandbox. There are no built-in rules. We give you the keys and leave you to play.