Halo 3: ODST vs. Left 4 Dead 2?

[Harrison]

which one should i get because they are both about the same price and a fps. i also heard that Halo3 odst comes with the original halo 3 multiplayer/maps + more downloaded maps is that true?

 

[Bobby Knobby]

Yes, ODST comes with the complete HALO multiplayer (+the Halo Reach Beta when it comes out). They both seem good shooters, but I'm keeping my money for L4D2 (just because its fun to shoot hundreds of zombies with over the top powerful guns)