Dragon Ball Z Gaiden: Saiyajin Zetsumetsu Keikaku (ドラゴンボールＺ 外伝 サイヤ人絶滅計画) – Famicom (1993) – The plan to eradicate the saiyans
This one is the first dragon ball game with an original story created especialy for the game.
Here we have to save the earth from the Dr Raichi and Hachiyack.
In fact, Hachiyack is a secret boss of the game !
You need to complete the game without using any item to have the chance to fight him.
One OVA was inspired by this game just after and then an interactive playdia game with videosclips from the OVA.