SDL was born from Icculus to run commercial games without issues on X/GL or whatever. So, it's actually a NOT in your clause. More like a 99% of the existing graphical games modulo some oddies with Ogre3D and friends.

At least in order to be playable under Linux. Said this, the 99% of the games from that era will run perfectly fine with OssPD->Pipewire (install OSSPD, just run the game) and 32bit SDL1 libraries.

Unreal engine uses SDL, so more than 1% of games.