If you’re up on the gaming world, you’ve been counting down to this day for months. Halo 3: ODST, the fourth Halo game by Bungie, is out today for Xbox 360.

So call in sick, and notify your girlfriend you‘ll be physically, mentally, and emotionally unavailable for the next few days. Stack up some sustenance within arm’s reach of that comfy chair. It’s game time.

The new game branches off a tad from the tradition of previous Halo games. ODST (standing for Orbital Drop Shock Troopers, which is as badass as it sounds) is an expansion, which takes place in the time leading up to the events of Halo 3. The entire game is first-person, but you don’t play through the eyes of series regular Master Chief (not to be confused with Bobby Flay, Master Chef, although that would be interesting). You play as Rookie and rotate among his team of Shock Troopers, and hence, it requires more stealth as opposed to straight-up Rambo tactics that got you this far. Halo 3: ODST is out now, and goes for $59.99.