Dragon Ball GT: Transformation 2

A sequel to Dragon Ball GT: Transformation was appearantly planned, as the game left off at the joining of Dr. Gero and Dr. Myuu in Hell, but it was not released due to its very minimal success, and as such the 2006 announced game Dragon Ball GT: Transformation 2 was never made by either Webfoot or Atari.

Original Article: http://dragonball.wikia.com/wiki/Dragon_Ball_GT%3A_Transformation