Steam will occasionally offer up free weekends on PC games to allow interested gamers a chance to try out the game before buying it. This weekend’s game is a big one.

Steam announced that Call of Duty: Modern Warfare 3 will be free-to-play this weekend. This will allow gamers to play the entire multiplayer portion of the game on the PC for free until Sunday at 4 p.m. EST.

To access the free weekend, just go to your Steam account and Modern Warfare 3 multiplayer should be listed under your games.

To celebrate the free weekend, Modern Warfare 3 is also on sale for $40. It’s rare for Call of Duty games to go on sale so jump on this deal while you still can.

The PC version of the game uses Steamworks for its matchmaking so the multiplayer experience should be relatively lag free and easy to set up.

Call of Duty: Modern Warfare 3 is the final chapter in Infinity Ward’s massively popular Modern Warfare franchise. The multiplayer introduced new features that is sure to convert a few people from playing Modern Warfare 2 or Black Ops up to the new one.

Considering that Modern Warfare 3 on the PC should be getting some new content soon, now would be a good time to hop on board the Call of Duty bandwagon.