A developer has succeeded in getting DOOM running on the Casio Loopy, an unusual Japan-only 1990s console better known for its built-in sticker printer and marketing towards girls than for action games. The story matters mainly as another striking example of the enduring fascination with porting DOOM to unlikely hardware, but also because it shows how enthusiast homebrew can extend the capabilities of obscure retro systems far beyond their original design.

According to the article, the Loopy is a 32-bit console released in 1995, and the port was created by developer Throaty Mumbo using an open-source flash cartridge called the "Floopy Drive". The developer first ran the game in an emulator, then got it working on real hardware after a further two days of work, including adjustments to deal with MIDI sound differences from DOOM's Roland SC-55 audio setup. GamesRadar says the result looks roughly comparable to the SNES version, despite the Loopy lacking a Super FX-style co-processor, and notes that extra cartridge modding with a Raspberry Pi RP2040 and PCM5102 enabled PCM sound effects alongside MIDI music.