After AlphaDream (the team behind the Mario & Luigi RPGs) developed and released their very first video game title, Koto Battle: Tengai no Moribito for the Nintendo Game Boy Color only in Japan, Nintendo wanted AlphaDream’s permission to develop an entirely new RPG with them, titled Gimmick Land. It was finished and almost ready to be released for the Game Boy Color in Japan, until Nintendo released the Game Boy Advance to make the Game Boy Color obsolete. After noticing that, AlphaDream decided to redevelop and rename Gimmick Land as Tomato Adventure for the Game Boy Advance. Only two screenshots of Gimmick Land were released to the public by the developers. [Info from Wikipedia]
Thanks to Celine for the contribution!