Age 774 is a major year in the . It is this year that every event between the Dragon Ball universe World Tournament Saga and Kid Buu Saga take place.
Broly is defeated and launched into the Sun ( movie only).
The 25th World Martial Arts Tournament takes place on May 7.
Goku is allowed to come back to Earth for a day to compete in the tournament.
Spopovich, Yamu, Pui Pui, Yakon, Dabura, and Babidi are all defeated and killed.
Majin Buu is reborn.
A clone of Broly is created, Bio-Broly, and is later destroyed ( movie only).
Saike Demon transforms into Janemba, later turns into Super Janemba. This happens on Saturday, the 16th ( movie only).
Goku and Vegeta use the Fusion Dance for the first time, forming Gogeta (movie only).
Old Kai is freed from the Z Sword.
Van Zant and Smitty go out on a murder spree.
Majin Buu creates Evil Buu, who absorbs Majin Buu and becomes Super Buu.
Super Buu launches the Human Extinction Attack, turning Chi-Chi into an egg also killing and turning Krillin, Android 18, Marron, Videl, Bulma, Yamcha, Puar, Mr. Popo, Master Roshi, Ox-King and Oolong into chocolate, killing most people on Earth, and he absorbs Gotenks and Piccolo, and later Gohan.
Old Kai gives his life to Goku.
Vegeta and Goku fuse to form Vegito.
Kid Buu blows up planet Earth using his Planet Burst technique, which causes the deaths of those who were still on the planet and still alive after Super Buu's Human Extinction Attack (Piccolo, Gohan, Goten, Trunks, Tien, Chiaotzu, etc.).
Everyone killed by Majin Buu is revived (except those who are evil).
Goku uses the Super Spirit Bomb to kill Kid Buu.
Kid Buu is reincarnated into Uub.
Hirudegarn terrorized the Earth and was killed by Goku's Dragon Fist ( movie only).
Tapion used the Time Machine to return to his time and his planet (movie only).
Vegeta achieves Super Saiyan 3 (game only).
 Broly returns as a legendary Super Saiyan 3 but is killed (game only).
Majin Buu is erased from the Earthlings' minds (stated to be September 7 in Daizenshuu 7 but November is six months after Buu's defeat.)