An official part of the storyline, it combines the continuities of the original DiC cartoon named Sonic the Hedgehog (based loosely on the first few games) and the Sonic X anime storyline that adapted several Sonic games. Characters were designed by Sonic and Super Smash Bros. (series) character designer Takashi Iizuka. The Zoah name came from an entry in a contest for fans to name a race in the game. It takes place immediately before Sonic Unleashed.
The gameplay revolves around traditional RPG elements, staying true to previous BioWare video games. Engagements will start when the playable character touches an enemy, rather than random battles occurring suddenly without seeing the enemy. During battle, four characters can fight at once, and you're also able to execute team attacks that involve up to four different characters.
In all, there are forty team attacks that can be performed. Each one has a unique name and includes one of the eleven characters.