Single-player games like The Atrium
Below are 8 single-player Steam games similar to The Atrium, 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 The Atrium page.
Ranked picks
- 1
Rock Diver
Single-player alternative to The Atrium — playable solo, no multiplayer required. Shares Adventure and Casual with The Atrium.
Land, mine, fill your pack, and head back to your ship. Become a Rock Diver in this incremental adventure as you travel across alien worlds, extract valuable minerals, upgrade your gear, and greet the locals along the way.
- 2
Astromine
Single-player alternative to The Atrium — playable solo, no multiplayer required. Shares Adventure with The Atrium.
Astromine is a survival mining game about scavenging fully destructible planets. Designed for 1 to 4 players. Land on planets and gather enough materials to fight off alien creatures, fight robot factions, build structures and spaceships, and conquer the solar system
- 3
Veinrider
Single-player alternative to The Atrium — playable solo, no multiplayer required. Shares Indie and Casual with The Atrium.
Veinrider is a scifi incremental game about traversing alien caves and escaping a strange planet. Fly, collect and upgrade your gravity-flipping craft to break deeper, faster and stronger!
- 4
A Game About Digging A Hole™
Single-player alternative to The Atrium — playable solo, no multiplayer required. Shares Indie and Adventure with The Atrium.
A minimalist game about digging a hole in the garden of a newly purchased house. Collect resources, sell them, upgrade your equipment and discover a mysterious secret. Costs you only one coffee!
- 5
Voxelantis
Single-player alternative to The Atrium — playable solo, no multiplayer required. Shares Indie and Adventure with The Atrium.
Voxelantis is a sandbox building and survival game set in a flat or spherical voxel world. Build anything out of your imagination, or adventure into uncharted territories to fight dangerous creatures. You can and deserve to have a small home planet of your own.
- 6
Afterdepth
Single-player alternative to The Atrium — playable solo, no multiplayer required. Shares Indie and Adventure with The Atrium.
Explore, build, and survive in the depths of a forgotten world. Manage oxygen, power, and resources as you uncover the secrets buried beneath the surface.
- 7
Slime Mine Survivor
Single-player alternative to The Atrium — playable solo, no multiplayer required. Shares Indie with The Atrium.
A roguelite action game blending 2D block mining with survivor-like combat. Dig deeper while dodging enemies and creeping poison gas, gather ores and treasure, then upgrade and evolve your pickaxe and weapons to build synergies and dominate enemies and the battlefield alike.
- 8
YAARRGH! Battle Island!
Single-player alternative to The Atrium — playable solo, no multiplayer required.
Co-op pirate survival crafting roguelite. Gather resources, craft gear, and build a fortified island stronghold by day—then survive escalating skeleton sieges by night with cannons, traps, combat, and teamwork.