The gameplay is basically the same as other virtual pets; it deals with the player raising, feeding, and training his/her Tyrannosaurus rex pet. The dinosaur hunts mice when it is young, but when it is adult it chases cars. It can only reach a weight of 100 pounds, like all other Giga Pets.
Hand held deviceEdit
The hand held game came out in three shapes: triangular, rectangular, and rounded.
Like some of the Giga Pets, the Giga Fighters allows the player to have dinosaurs fighting each other. This can be done by connecting both Giga Fighters devices using its contact points.
Only the T. rex was playable (and the only dinosaur to appear) in Giga Pets; however, more than one dinosaur can be played in Giga Fighters.