Stacks:space! Free Downloa... Apr 2026

Add new ways to combine cards. For example, you could define a recipe where stacking an Astronaut on two Plast Steel cards yields a new type of defense turret.

is built on the Stacks:Engine and is highly moddable using basic JSON knowledge. Stacks:Space! Free Downloa...

Use these (enabled in game options) to automatically redirect output from production buildings to a specific spot on your board. Add new ways to combine cards

Create custom resources, buildings, or units by defining their attributes (ID, name, description) in a JSON file. Stacks:Space! Free Downloa...

If you are developing your in-game base, focus on these core mechanics to "unlock" better efficiency:

Train your Astronauts in Intelligence or Agility to speed up crafting times and improve combat performance.