First, "SEUS" probably stands for something specific, maybe the developer's name or a project. Then "PTGI" could be another acronym, possibly related to the type of shading or lighting technique. "GFME" might refer to a game engine, like "Frostbite" (Frostbite Game Engine), but here it's GFME. Wait, GFME might stand for something else. Maybe it's a mod or a custom engine.
