Yume Koujou Doki Doki Panic (Japan) [b] ROM Download - Free Famicom Games - Retrostic
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!
Romhacking.net - Games - Yume Koujou: Doki Doki Panic
NES – Doki Doki Panic | Obscure Video Games
Dream World: Dokidoki Panic (NES) - online game | RetroGames.cz
Yume Koujou : Doki Doki Panic
Doki! Doki! Yuuenchi [hFFE] ROM - NES Download - Emulator Games
Doki Doki Panic - Gameplay on Original Hardware (Famicom Disk System) - YouTube
Doki Doki Panik! By MB Hacks (SMB2 Hack) ROM - NES Download - Emulator Games
Doki Doki Panic NES Edition (SMB2 Beta) by KristianVasquez on DeviantArt