Freeform Universal RPG
From PerilPlanet, created by Youk

FU is universal. Or generic. Or whatever you want to call it.
These core rules are not wrapped around a specific background or setting, and make an effort to assume nothing. It is a basic system around which you may create your own settings and stories. With thatsaid, however, FU favours certain kinds of play. FU lends itself to a ‘seat of your pants’ style, where little preparation is needed. Narrators that enjoy running adventures ‘on the fly’ will certainly enjoy FU, as will players that are tired of being told what they can’t do, instead of what they might achieve.

Based from : https://www.perilplanet.com/freeform-universal/