What are some good xbox live arcade games with multiplayer to pick up?

I wanna pick up some games and I'm unsure about what to get, don't tell me to get a job because I live in hell where there are no jobs. So, I'm into racing games and shooters, maybe an rpg if its epic, or a very good strategy game. Thanks for your help!What are some good xbox live arcade games with multiplayer to pick up?
Battlefield 1943, best game on the xbox live market place.

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