While is not available as a full free download, you can legally play a portion of it for free through a demo or its prologue . The full game is a paid title currently in Early Access and can be purchased from several official digital storefronts. Official Ways to Play for Free
A standalone free prologue is also available on Steam, offering an introductory experience of the game's mechanics and story . Where to Buy the Full Game Fabular: Once Upon a Spacetime Free Download
You can download a free demo version on Steam to test the physics-based "knights in space" combat and art style before buying . While is not available as a full free
A top-down, techno-medieval roguelike where you control armored spaceships that fight like knights using swords and shields . Fabular: Once Upon a Spacetime Free Download