IGN has an interview with Steve Robert, producer of The Simpsons Arcade game which was released Dec. 21st as an iPhone app.
Robert says that Gracie Films was “very involved” in the development of the game, and adds that the script was drafted by Simpsons’ writer Michael Price.
An earlier press release from game publisher Electronic Arts states that the voices were all recorded “by the real, live actors” and Geek site Kotaku.com confirms that all of the following provided voices for the game: Dan Castellaneta, Julie Kavner, Nancy Cartwright, Hank Azaria and Harry Shearer.
Robert also says that the game features 25 characters, “plus a rat, some scary bats, cyborgs, vicious hounds, and attack cows.”