They Do Not Die is a top down dual stick 2D indie zombie shooter. In a similar vein as classics like Crimsonland or Alien Shooter.
The game is set in procedurally generated and entirely destructible cities. Overflowing with both ravenous zombies (represented by green circles with an arrow pointing in the direction they're facing) and fleeing human NPC survivors (represented by a pink circle).
You're equipped with an assault rifle (perfect for mowing down zombies) and a rocket launcher (it can dynamically destroy any wall you see, but you'll have to be careful not to hurt yourself in the blast). There are also a few other weapons to try out though once you beat the game.