Kubi's adventure takes place
in the various generations in video game history.
Kubi will travel through the 4-bit, 8-bit, 16-bit, 32-bit and
64-bit eras until he finally returns to the 128-bit era.
The eras are presented as fictional installments of the Bit
Boy!! series: Bit Boy, Bit Boy 2, Super Bit Boy, Bit Boy 3D, Bit
Boy 64 and Bit Boy Wii.
When you have rescued all
of your friends from a particular era, you can then access the
next generation in the time travel via the main menu.