THQ's announced that anyone who pre-orders Homefront on Steam will get Metro 2033 for, well, free.
The 4A shooter released last year for PC and 360. A sequel, Metro 2034, is in the works.
Other than Metro, you'll also be able to get day one access to Air Assault Drone for the shooter's multiplayer.
Homefront releases in the US on March 15 and March 18 in the UK.