Team Tachyon's upcoming third-person shooter Quantum Theory isn't a PS3 exclusive, after all. Publisher Tecmo confirmed today that the game is coming to the Xbox 360 as well.

There's no sort of timed exclusive at work here, either. The 360 version will arrive in Spring 2010, the same release window given to its PS3 counterpart. Somewhere on the Internet, people are engaged in a very rude discussion about this.

The Tokyo Game Show trailer for Quantum smacked heavily of Gears of War. Guess Tecmo figured Quantum would already have an established audience on the 360, then.