Single-player games like TerraTech Worlds
Below are 12 single-player Steam games similar to TerraTech Worlds, 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 TerraTech Worlds page.
Ranked picks
- 1

TerraTech
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Action and Indie with TerraTech Worlds.
TerraTech is an open-world, sandbox adventure game, where you design and build your own creations through a mix of crafting, combat and discovery. Design vehicles from a huge library of blocks. Scavenge, craft and buy new parts to survive and become the ultimate planetary prospector.
- 2

Eden Crafters
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Strategy and Indie with TerraTech Worlds.
Eden Crafters is a solo or co-op open-world survival, crafting, and factory-building game where you transform a hostile planet into a habitable haven for humanity. Build, automate, and terraform. Control the climate, create a breathable atmosphere, and turn toxic lakes into water: shape a new world!
- 3

The Front
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Action and Indie with TerraTech Worlds.
The Front is a survival open-world crafting sandbox game. You are a resistance fighter sent back in time to stop the rise of a tyrannical empire. Collect resources, craft tech, build shelters, and fight monsters to accomplish your mission.
- 4

Satisfactory
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Strategy and Indie with TerraTech Worlds.
Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!
- 5

Planetaries
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Action and Indie with TerraTech Worlds.
Experience a vast Sci-fi open-world survival TD game set on a distant planet deep in the universe. Craft, build, mine, trade, explore, and survive in this alien world. Collect Data and defend against waves of enemies seeking to banish you. Enjoy the adventure in Singleplayer or Multiplayer.
- 6

Cubic Odyssey
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Action and Adventure with TerraTech Worlds.
Embark on a galactic journey in Cubic Odyssey, an open-world adventure where you explore vibrant planets, craft tools, build vehicles, and fight the Red Darkness. Uncover ancient mysteries, and shape a universe full of life, danger, and limitless possibilities!
- 7

Terraria
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Action and Indie with TerraTech Worlds.
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
- 8

Soulmask
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Indie and Adventure with TerraTech Worlds.
Don the Ancient Mask. Wield the power of gods. Possess any of your tribespeople, recruit followers, and build a thriving automated civilization. Survive, expand, and forge your own legacy across a vast ancient open world — together with friends.
- 9

Space Engineers
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Action and Strategy with TerraTech Worlds.
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

Scrap Mechanic
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Action and Indie with TerraTech Worlds.
Enter the creative paradise of Scrap Mechanic! Build fantastic machines, go on adventures with your friends and defend against waves of evil Farmbots in this imaginative multiplayer survival sandbox. With Scrap Mechanic’s powerful creation tools you can engineer your own adventures!
- 11

Trailmakers
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Action and Indie with TerraTech Worlds.
Build the ultimate vehicle and explore a vast open world filled with challenges and adventure. Play solo or team up with friends in multiplayer to conquer the toughest obstacles. With a thrilling campaign mode and endless creative possibilities, Trailmakers is the ultimate sandbox for adventurers.
- 12

TerraTech Legion
Single-player alternative to TerraTech Worlds — playable solo, no multiplayer required. Shares Action with TerraTech Worlds.
TerraTech Legion, a chaotic Bullet Heaven Builder. Build the ultimate battle vehicle block by block and survive waves of robotic foes, ramming them at speed and shooting infinite projectiles.