Beetle-SuperGrafx

PC Engine SuperGrafx is a NEC PC Engine SuperGrafx video game system emulator that can be used as a libretro core.
PC Engine SuperGrafx is a libretro port of the SGX module of Mednafen PCE Fast.
These are libretro features, not frontend or standalone emulator features.
retro-wertz aded support for cheevos/RetroAchievements.