This is a simple hack that converts Dr. Mario of MMC1 mapper to NROM.
It's made by modifying the "Puyo Boy (Dr. Mario hack) (Unl).nes"
Many tilesets and animations are missing, but they are playable.
Database match: Dr. Mario (Japan, USA)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: 01DE1E04C396298358E86468BA96148066688194
File CRC32: B1F7E3E9
ROM SHA-1: FF6459BC3AF5743E3D303823999F33D74ABDF1AA
ROM CRC32: 198C2F41