Its level design is inventive, its mechanics are tight, and it was the entry that introduced features which went on to become series staples. The only thing it was missing was color. Mega Man World 4 DX is a full colorization hack by marc_max (v1.1) that transforms the original monochrome experience into a vibrant, GBC-native adventure — and goes further than just adding color, addressing some of the Custom cartridge, plug and play. Compatible: GBC, GBA, GBA SP.