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!
TMK | Super Mario Bros. 2 Madness | From Doki Doki Panic to SMB2
Doki! Doki! Yūenchi: Crazy Land Daisakusen - Wikipedia
Play NES Doki! Doki! Yuuenchi (Japan) Online in your browser - RetroGames.cc
Yume Kojo Doki Doki Panic - IGN
Yume Koujou Doki Doki Panic Review (NES) | Nintendo Life
Jerom on X: "Doki! Doki! Yuuenchi: Crazy Land Daisakusen/ドキ!ドキ!遊園地 (stupidly re-branded as "Trolls in Crazyland" in Europe on NES) ~ Famicom 1991 (Developer: KID / Publisher: VAP) ~ https://t.co/gAoOqAgKDm https://t.co/yGDpypmOoH" / X
Doki! Doki! Yuuenchi: Crazy Land Daisakusen (NES) · RetroAchievements
Ending for Doki! Doki! Yuuenchi-Real End(NES / Famicom)
NES Longplay - Doki Doki Yuuenchi: Crazy Land Daisakusen (JP) : KAGE-008 : Free Download, Borrow, and Streaming : Internet Archive
Doki Doki Panic Yume Kojo Nintendo Famicom Disk System FC NES DK Very Good! | eBay