Check Out the Intro to the Cancelled Game Boy Color Version of Jet Force Gemini
It's a Rare find!
Rare is the king of unused and scattered alpha and beta material. One of the holy grails for Rare fans is the Jet Force Gemini Game Boy Color game that was announced but never released.
The odd thing about the game is that most of the work was complete on it before it was scrapped. It even got a full intro added, which the owner of the elusive beta cartridge has been so kind to upload on YouTube. With all the retro craze, Rare should polish the rest of this up and release it to the public.