You can get Broforce at http://www.broforcegame.com/
Broforce is an over-the-top 2D pixel art shoot 'em up that affectionately parodies action movies and the war on terror. It's very chaotic, with terrain that can be destroyed by gunfire and explosives lying around that can result in screen-clearing chains of explosions at the drop of a hat. A single stray bullet can kill you, which is mostly okay as this just means you switch to the next randomly-selected bro, which adds enjoyably to the chaos since the bros are fun and varied and it's entertaining to figure out how to be effective with each bro's particular power set. The problem is that you have limited lives, and it can be frustrating to have to replay a level because of the game's unpredictable destruction or because you got stuck with a very limited bro who just wasn't useful for the situation. Regardless, the game is best enjoyed with a friend so you can laugh at the chaos and silliness together.