Those gamers who own Rising Storm will get a nice surprise today the next time they load up the game. Tripwire Interactive has released the Armored Assault Free Content Pack to all owners of the game.

This pack includes a new weapon, two new tanks, new custom maps, and more.

If you don't yet own the game, you can get Rising Storm for 75% off ($4.99 for regular edition, $7.49 for Digital Deluxe, $14.99 for a 4-pack) as part of Steam's Midweek Madness Sale that runs from now until September 26 at 10AM (PT).