The ingame content of DBNU spans much of Dragonball Z and GT with a bit of Dragonball in the mix. There is no set time period for the mobs and areas that appear and the content overlaps.
However, the Roleplaying setting is independant and takes place roughly 20 years after Dragonball GT, that is 25 years after Dragonball Z in Age 809.
This List was used for reference.
- Age 737
Planet Vegeta destroyed by Frieza
- Age 749
Bulma meets Goku; the Dragonball series begins
- Age 753
Goku kills King Piccolo
Piccolo Jr born
- Age 757
- Age 761
Raditz arrives on Earth; Dragonball Z begins
- Age 762
Planet Namek destroyed by Frieza
- Age 767
The Androids attack
- Age 774
Majin Buu awakened, defeated
- Age 779
- Age 784
Goku begins training with Uub
- Age 789
Goku is transformed into a child by the Black Star Dragonballs; Dragonball GT begins
- Age 790
The Shadow Dragons are defeated
- Age 790-809
A book released by Gohan spreads the knowledge of Ki control
In the wake of Mr. Satan's influence, Pan builds momentum for widespread interest in martial arts
Krillin establishes the New Turtle Style School of Martial Arts; Tien Shinhan establishes the New Crane Style School
Trunks and Goten establish the Kikoukenjutsu Sword School of ki-enhanced fencing
A group calling themselves the Red Ribbon Reserves have recovered one of Dr. Gero's backups and begun construction on new androids. Many androids have been recovered and reformed by Capsule Corp.
Space travel has become more commonplace with the general populace now aware of alien life in the galaxy; however, it is still rare for humans to travel offworld
The Fierians are released from the sealed cave
An unknown group has created new Golems in an effort to revive Majin Buu
After Planet Vegeta was restored using a wish on the Dragonballs, much of the Saiyan race was resurrected using extract from a Tree of Might.
A rebellion has begun among the Saiyans. There are those who support the revived King Vegeta as the rightful ruler, others who oppose his rule due to his failure against Frieza, and still others who abandoned their planet to enlist with the restructured Planet Trade Organization.
The Planet Trade Organization, having been destabilized by the loss of Frieza as well as King Cold and Cooler, has come under the control of Frieza's son, Kuriza.