Free games like Buildanauts
Below are 9 free-to-play Steam games similar to Buildanauts, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Buildanauts page.
Ranked picks
- 1

Landfall Archives
Free-to-play alternative to Buildanauts — no purchase or trial window. Shares Indie with Buildanauts.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
- 2

SuchArt: Creative Space
Free-to-play alternative to Buildanauts — no purchase or trial window. Shares Indie and Simulation with Buildanauts.
Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!
- 3

Aircar
Free-to-play alternative to Buildanauts — no purchase or trial window. Shares Indie and Casual with Buildanauts.
A simple immersive flying game built for VR. Pilot an aircar through a futuristic cityscape.
- 4

The Riftbreaker: Prologue
Free-to-play alternative to Buildanauts — no purchase or trial window. Shares Indie with Buildanauts.
The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.
- 5

Jigsaw Puzzle Dreams
Free-to-play alternative to Buildanauts — no purchase or trial window. Shares Indie and Casual with Buildanauts.
Beautiful Multiplayer Jigsaw Puzzle game where you can design the room you play in!
- 6

The Sims™ 4
Free-to-play alternative to Buildanauts — no purchase or trial window. Shares Simulation and Casual with Buildanauts.
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.
- 7

Aimlabs
Free-to-play alternative to Buildanauts — no purchase or trial window. Shares Indie and Simulation with Buildanauts.
Aimlabs is the aim trainer of choice for over 45 Million players, from beginners to esports pros. Our unique aim analysis optimizes your gameplay, targets your weaknesses & builds key skills for any FPS game! Time to warm up with our unlimited scenarios & rank up in-game!
- 8

Supermarket Together
Free-to-play alternative to Buildanauts — no purchase or trial window. Shares Indie and Simulation with Buildanauts.
The multiplayer supermarket has arrived to your neighbourhood for free! Stock your shop space, unlock perks and franchises, hire employees or chase those pesky shoplifters. The more players, the more action!
- 9

Built by Day, Bitten by Night
Free-to-play alternative to Buildanauts — no purchase or trial window. Shares Indie and Simulation with Buildanauts.
Built by Day, Bitten by Night is a cozy voxel city builder with a small problem: the zombies. And pirates. And yetis, robots, UFOs. Build your kingdom by day — farms, fountains, mansions, dragons. Defend it by night. How long can your keep survive till dawn?