Battletoads ruined many promising young lives during the franchise's brief reign of terror in the early '90s. Scores of children suffered untold frustration at the hands of the nigh-impossible original NES game, and still more were scarred by sequels like Battlemaniacs and Battletoads & Double Dragon.

Thankfully, the toads were stopped, but in a moment of cartoonish villainy, Rare later sought to revive the series for the Game Boy Advance. As a recently released prototype ROM image demonstrates, the project didn't get far.

Former Rare developer "Jens" recalls working on the reboot alongside a proposed Xbox Battletoads game:

"I think we agreed on the team that the ultra-hard NES version would be difficult to sell nowadays, and many sections look very dated by now. We looked at all the other Battletoads games and I think we even had the arcade board running. We wanted to keep many of the features that people remembered positively of the games, while trying to focus the gameplay on some consistent mechanics to avoid frustration."

Jens continues: "Overall it was a big relief for me when it was cancelled. Developing on GameBoy while Rare was still owned by Nintendo was hard enough and I often felt like a second class citizen. Getting any resources to make a good GameBoy title would've been even harder as a 3rd party developer for a competing platform."