GBA's GT Transformation could've been really good except for
The game only has three lives (Goku, Trunks and Pan) and if you lose all three, that's it. Game over. 😢
It's a shame really because the game's pretty good and the story line is very interesting, kind of like what you'd expect from a Kai version if GT had a comic book version (filler stripped off).
EDIT: There are these cheat codes so it certainly makes the game better but it should've had continues god dammit! >_<"
http://www.gamefaqs.com/gba/921892-dragon-ball-gt-transformation/cheats