Free games like Autonauts
Below are 8 free-to-play Steam games similar to Autonauts, 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 Autonauts page.
Ranked picks
- 1
Upload Labs
Free-to-play alternative to Autonauts — no purchase or trial window. Shares Simulation with Autonauts.
A sci-fi management game where you build and optimize your computer's system from the ground up. Connect and configure interconnected nodes to efficiently download, process, and upload files. Manage your setup, solve system challenges, and become the ultimate system architect
- 2
Plasma
Free-to-play alternative to Autonauts — no purchase or trial window. Shares Indie and Simulation with Autonauts.
Plasma is a pure engineering sandbox. Use advanced visual programming and robotics tools to create anything you can imagine.
- 3
Outpath: First Journey
Free-to-play alternative to Autonauts — no purchase or trial window. Shares Indie and Casual with Autonauts.
Outpath: First Journey is a prologue chapter of the main game, Outpath. An experimental clicker base building game. Craft, gather & manage resources, build your base and buy more islands to exploit and expand!
- 4
Kingdom: Classic
Free-to-play alternative to Autonauts — no purchase or trial window. Shares Indie and Simulation with Autonauts.
Kingdom is a 2D sidescrolling strategy/resource management hybrid with a minimalist feel wrapped in a beautiful, modern pixel art aesthetic.
- 5
Fallout Shelter
Free-to-play alternative to Autonauts — no purchase or trial window. Shares Simulation with Autonauts.
Fallout Shelter puts you in control of a state-of-the-art underground Vault from Vault-Tec. Build the perfect Vault, keep your Dwellers happy, and protect them from the dangers of the Wasteland.
- 6
My Singing Monsters
Free-to-play alternative to Autonauts — no purchase or trial window. Shares Simulation and Casual with Autonauts.
Dive into the Musical World of My Singing Monsters! Breed them, feed them, listen to them sing! Breed & collect a menagerie of Monsters, each a living instrument! Build your paradise across 35+ Islands, customize your world, and enjoy endless music! There's never a dull moment in the Monster World!
- 7
Idle Research
Free-to-play alternative to Autonauts — no purchase or trial window. Shares Indie and Simulation with Autonauts.
Idle Research is an addictive, resource management, incremental game with both idle and active playstyles. Research and craft colorful Flasks and Tubes to earn as much Energy as possible! Big numbers guaranteed.
- 8
Palia
Free-to-play alternative to Autonauts — no purchase or trial window. Shares Indie and Simulation with Autonauts.
Discover a welcoming world in Palia, a free-to-play fantasy life sim adventure where you can craft, explore, and create the life and home of your dreams. With nearly endless ways to make Palia your home, you’ll find relaxation and joy in every corner of this vibrant, heartwarming world.