Single-player games like {Undefined}
Below are 15 single-player Steam games similar to {Undefined}, 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 {Undefined} page.
Ranked picks
- 1
FOUNDRY
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Strategy and Indie with {Undefined}.
Build a sophisticated robot factory optimized to perfection in an infinite voxel world. Mine and harvest resources, automate your production lines and manage complex systems while researching your way to become the galaxy’s leading robotics megacorp.
- 2
Demonsions: Industry
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Strategy and Indie with {Undefined}.
Demonsions: Industry is an open world, procedurally generated block crafting/building game. Everything can be mined. Enjoy crafting, building, and fully automating your survival in this strange world.
- 3
FortressCraft Evolved!
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Strategy and Indie with {Undefined}.
FortressCraft Evolved is a unique blend of Voxel Landscapes, Tower Defense, Crafting, Logistics, Exploration, Combat and Assembly lines. Players begin by crash-landing on a strange alien world, left with only a small handful of starting machines.
- 4
friends world
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Strategy and Indie with {Undefined}.
This is a voxel style sandbox game that focuses on survival. You can do anything inside and destroy any block. and cooperatively survive and fight with friends in a world. If you like playing Minecraft, this is a game you must not miss.
- 5
Orebound
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Indie and Adventure with {Undefined}.
Orebound is a dwarven themed factory automation game. Play alone or with friends as you build, mine, craft and explore a voxel generated world! Build your fortress, expand your factory, fight off creatures who dwell beneath the mountains and embark on a journey of greatness.
- 6
Evospace
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Indie and Adventure with {Undefined}.
Contribute to the colonization of the universe. Get and process resources, develop your technologies. Achieve complete automation and build a portal to include another planet in the chain of worlds.
- 7
Dyson Sphere Program
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Strategy and Indie with {Undefined}.
Build the most efficient intergalactic factory in space simulation strategy game Dyson Sphere Program! Harness the power of stars, collect resources, plan and design production lines and develop your interstellar factory from a small space workshop to a galaxy-wide industrial empire.
- 8
Timberborn
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Strategy and Indie with {Undefined}.
Humans are long gone. In a world struck by droughts and toxic waste, will your lumberpunk beavers do any better? A sandbox city-building game featuring ingenious animals, vertical architecture, water physics, and terraforming. Contains high amounts of wood.
- 9
Space Engineers
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Strategy and Indie with {Undefined}.
Space Engineers is a sandbox engineering game where you design and build ships, stations, and planetary bases in a fully destructible environment. Explore planets and space, mine resources, survive hazards, and engage in combat alone or with friends in Creative or Survival modes.
- 10
Second Second
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Strategy with {Undefined}.
Second Second is a Roguelike card game without drawing cards. Explore randomly generated worlds, defeat monsters, collect valuable cards and add the best ones to your deck. The battles are not based on luck, so prepare to put your skills to the test.
- 11
Minecraft: Story Mode - A Telltale Games Series
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Adventure with {Undefined}.
Episode 1 is now FREE - for a limited time! In Minecraft: Story Mode, playing as either a male or female hero named 'Jesse,' you’ll embark on a perilous adventure across the Overworld, through the Nether, to the End, and beyond.
- 12
Besiege
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Indie and Simulation with {Undefined}.
Besiege is a physics building game about constructing medieval machines to annihilate armies, obliterate castles and overcome challenging obstacles. Conquer the campaign or skirmish with friends in Multiplayer!
- 13
The Sims™ 4
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Adventure and Simulation with {Undefined}.
Play with life and discover the possibilities. Unleash your imagination and create a world of Sims that’s wholly unique. Explore and customize every detail from Sims to homes–and much more.
- 14
Minecraft Legends
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Strategy with {Undefined}.
Discover the mysteries of Minecraft Legends, a new action strategy game. Explore a gentle land of rich resources and lush biomes on the brink of destruction. The ravaging piglins have arrived, and it’s up to you to inspire your allies and lead them in strategic battles to save the Overworld!
- 15
The Sims™ Legacy Collection
Single-player alternative to {Undefined} — playable solo, no multiplayer required. Shares Simulation with {Undefined}.
The original game you know and love. For Windows 10/11. Create a neighborhood of Sims and guide their lives through careers and romance. Or create chaos with open-ended gameplay that lets you shape their destinies.