The series in which the game is based on. A lot of features of the series are included in the Game, Transformers Universe.
For instance some of the Character's appearance and same as Transformers Prime, like Optimus Prime and Megatron.
Also some weapons are included in Transformers Universe that are also included in Transformers Prime like Knockout's chainsaw weapon which both Oppressor and the Decepticon Brawler use.
Also new characters are introduced in Transformers Universe that are not included in the series Transformers Prime. Like Prowl and Barricade .