A hack of Mappy which makes all of the graphics resemble one of it's sequels, Mappy Arrangement. All the characters, objects, and level tiles have been replaced with versions that more closely resembles Mappy Arrangement. Sadly though, playing as Player 2 doesn't let you play as Mapiko.
Database match: Mappy (Japan)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: 30A06C63F13D33DC5BB307F15D4BE7D4478740AF
File CRC32: 3F0E8E0A
ROM SHA-1: E22B95C6687AD703FDEC22F4FE79556DA6A2256B
ROM CRC32: 5D1301C5