Doki Doki Panic NES Edition (SMB2 Beta) by KristianVasquez on DeviantArt
Doki Doki Panic Game | Game Cartridge | Zoga | Cases - Game Cartridge Nes/fc Console Cover - Aliexpress
Doki Doki Panic Club! (NES) - Improved Version by RetroReimagined on DeviantArt
Doki Doki Panic - Pirate FDS port - nesdev.org
NES – Doki Doki Panic | Obscure Video Games
Yume Koujou Doki Doki Panic ROM - Famicom Download - Emulator Games
Found an NES version of Doki Doki Panic on eBay! Thought it'd be a hack of the original sprites on top of Mario 2 but this appears to be the original game!