User blog comment:Argonash11/Concerns for ME3.../@comment-1886172-20110312010344/@comment-743796-20110312045220

A large part of the game most likely will take place on Earth or rather it's orbit (if any space combat). But the ME franchise has built itself on exploration... perhaps Shepard goes to Earth first to temporarily resist the reapers, then goes off-world to explore areas and look either for new squadmates or to try and convince others to fight for him/her, depending on the choices made in the previous two games.

If that is a big part of the game, I could see alliances with the rachni (if you saved the Queen), the krogan (if Wrex is still alive and Grunt wasn't killed), the quarian (if Tali's loyalty quest was successful and Shep pushed for abstaining from geth conflicts, as well as the usual suspects of turina, human and asari races. Maybe also batarian if you spared Balak in Bringing Down the Sky.