Dragon Ball Z is a video game franchise based of the popular martial arts anime of the same name. A majority of the games just re-tell a very basic iteration of the old story but some modern games have created original content by way of time travel and "what if" scenarios.
Cell Games - Giant Bomb
Dragon Ball Z: Budokai HD: Giant Bomb Quick Look
Dragon Ball Z: The Legacy of Goku I & II (Game) - Giant Bomb
List of techniques used by Goku, Dragon Ball Wiki
Super Dragon Ball Z, Dragon Ball Wiki
Super Dragon Ball Z, Dragon Ball Wiki
Skullgirls Lab Zero Games Character Wiki Giant Bomb, swordman
Majin Buu (Character) - Giant Bomb, dragon ball majin boo
vengefulwilberg's Review of Dragon Ball Z: Ultimate Tenkaichi