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Ben Tennyson is now 15 and becoming a leader wearing his powerful Omnitrix again. Grandpa Max is missing and Ben needs the help of Gwen and Kevin to find him. Ben has 10 new aliens -- including Swampfire, Goop and Jetray -- to fight against Highbreed and stop him from making humans extinct and destroying Earth.
Ben 10: Alien Force was released on October 28, 2008.
Ben 10: Alien Force is available on Nintendo DS.
Ben 10: Alien Force was developed by D3 Publisher.
Ben 10: Alien Force is rated E by ESRB.