FACT! - The rules-lite simulation engine

[u/Mars_Alter]

https://www.drivethrurpg.com/en/product/588253/fact

I noticed that most rules-lite genre-agnostic game engines tended to skew Narrativist (for understandable reasons), so I decided to make a Simulationist alternative. I like to think of it as a sort of GURPS-ultra-light, but the mechanics are more closely derived from FUDGE.

Edit: If I've set it up correctly, the core game mechanic should be thoroughly explained in the free preview. The rest of the document is basically just explaining how to build a setting and characters at the right level of detail to operate that mechanic.