Title: Dungeon Buster 2: Revive
Company: Great
Format: 3 FDI images
Size: 1.48 MB Compressed
Game Type: RPG
Adult Content: Nudity

It's an RPG, marginally. You play a girl based on one of the 4 elements, and battle other female opponents inside what seems to be a VR world. Although the combat system is simple (One "Biobits" stat instead of HP/MP) the world itself is very confusing, although playable without japanese knowledge.

If you don't speak japanese, you can find a handy guide here.