“Odema and the magic book” is a cancelled 2D sidescrolling action / platform game that was in development by french team Namdoo for the Gameboy Advance. From the video below we can see that Odema was going to be somehow similar to a “kiddy Metal Slug”, with 7 huge worlds with multiple pathes, more than 30 different enemies and 14 Bosses. Namdoo managed to create a playable beta version in 4 MegaBytes only, everything was packed on the cartridge and unpacked on the fly, at 60 frames per second, but there was still no sound or sfx. The game was about 75% complete when they had to cancel it.
Thanks a lot to Collect-Thor for the contribution!