Single-player games like Autocraft
Below are 18 single-player Steam games similar to Autocraft, 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 Autocraft page.
Ranked picks
- 1

Kerbal Space Program
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie and Simulation with Autocraft.
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.
- 2

SimplePlanes
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie and Simulation with Autocraft.
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.
- 3

TerraTech
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie with Autocraft.
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.
- 4

Scrap Mechanic
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie and Simulation with Autocraft.
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

Archean
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie and Simulation with Autocraft.
Gather resources, craft components, build vehicles, and code their logic in a physics-driven engineering sandbox and full scale space sim.
- 6

From the Depths
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie with Autocraft.
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.
- 7

Space Engineers
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie and Simulation with Autocraft.
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.
- 8

SimpleRockets
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie and Simulation with Autocraft.
I am excited to release my first game on Steam! SimpleRockets was released in 2013 for mobile and I've put a ton of work into it to get it ready for PC and Mac. It was inspired by KSP, and it offers a simpler 2D experience for building rockets and exploring space with realistic orbital mechanics.
- 9

Trailmakers
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie and Simulation with Autocraft.
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

Besiege
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie and Simulation with Autocraft.
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!
- 11

Wytchwood
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie and Casual with Autocraft.
Wytchwood is a crafting adventure game set in a land of gothic fables and fairytales. As the old witch of the woods, explore a strange countryside, collect magic ingredients, brew sorcerous spells, and pass judgement upon a capricious cast of characters.
- 12

Apotheon
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie with Autocraft.
Apotheon is a heroic action game set within the vibrant world of Ancient Greek Mythology. Ascend Mount Olympus, wrestle the divine powers from the Pantheon of Gods, and save mankind.
- 13

CRYPTARK
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie with Autocraft.
Cryptark is a 2D sci-fi shooter where you take on the role of a heavily armed privateer seeking to earn government contracts by boarding deadly alien space-hulks. It's up to you to strategize a plan of attack, pick an equipment loadout, and destroy the central core to be victorious.
- 14

Capsized
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie with Autocraft.
Capsized is a fast paced 2D platformer focused on intense action and exploration. As a intrepid space traveler, your ship has crash landed on a mysterious alien planet. You must navigate through the perilous environment and fight off blood-thirsty creatures to save your crewmates and escape with your lives!
- 15

DuneCrawl
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie with Autocraft.
DuneCrawl is an open world action-adventure game, where you take to the sandy seas atop a gigantic crustacean festooned with black powder cannons. Play as a solo Crab Keeper, or with a crew of up to three other friends in local and online coop.
- 16

Maximum Override
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie and Simulation with Autocraft.
Maximum Override is a chaotic city destruction game where the machines come alive. Wreak havoc in a fully destructible randomly generated city with anything you can find.
- 17

Modbox
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie and Simulation with Autocraft.
Modbox is a multiplayer game creation sandbox for Desktop+VR
- 18

GUNHEAD
Single-player alternative to Autocraft — playable solo, no multiplayer required. Shares Indie with Autocraft.
Gunhead is a fast paced strategic roguelike FPS where you take the role of a pirate mech with a gun for a head, looting derelict spaceships filled with monstrous drones made out of bone and steel. Sequel to the 2d roguelite Cryptark.