Single-player games like TerraTech
Below are 15 single-player Steam games similar to TerraTech, 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 page.
Ranked picks
- 1
TerraTech Worlds
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Action and Indie with TerraTech.
TerraTech Worlds is an open world, build-craft adventure game, set on an uncharted alien world. Play solo or with friends, explore your surroundings, craft unique vehicles, construct automated bases, and battle your way through hazards and enemies to harness the power of your environment
- 2
Terraria
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Action and Indie with TerraTech.
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
- 3
Space Engineers
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Action and Indie with TerraTech.
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.
- 4
Scrap Mechanic
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Action and Indie with TerraTech.
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!
- 5
Starbound
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Action and Indie with TerraTech.
You’ve fled your home, only to find yourself lost in space with a damaged ship. Your only option is to beam down to the planet below, repair your ship and set off to explore the universe...
- 6
Dig or Die
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Action and Indie with TerraTech.
Crash land on a hostile planet where you'll have to build the strongest defenses if you wish to live to escape from it. But be warned... this planet is merciless. Build strong, and smart; else physics may flood or destroy your only hopes of survival.
- 7
Satisfactory
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Indie with TerraTech.
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!
- 8
From the Depths
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Action and Indie with TerraTech.
Over 1000 unique components allow you to build and command voxel vehicles from the deep ocean to outer space! Forge strategies, allegiances and fleets strong enough to destroy eight deadly factions of the planet and reign supreme. A genre-defying mashup of simulation, building, RTS and RPG.
- 9
Trailmakers
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Action and Indie with TerraTech.
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.
- 10
Factorio
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Indie with TerraTech.
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
- 11
Besiege
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Indie with TerraTech.
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!
- 12
Kerbal Space Program
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Indie with TerraTech.
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
- 13
SimplePlanes
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Indie with TerraTech.
Build airplanes by snapping parts together, designing wing sections, and attaching engines. At any time, you can strap yourself into the cockpit and see how it flies with realistic physics. If you're not in the mood for building, over 100,000 airplanes are available to download for free.
- 14
Homebrew32
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Action and Indie with TerraTech.
Drawn into your PC by an antivirus, control a multi barrel tank in this Action Roguelike, 2D Shooter. Defeat motherboard viruses to unlock new zones. The 'UPGRADE MACHINE' grants enhancements every 1-10 seconds. Use points to add upgrades in this Arcade, Top-Down Adventure.
- 15
TerraTech Legion
Single-player alternative to TerraTech — playable solo, no multiplayer required. Shares Action with TerraTech.
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.