Alien Shooter Free is, as the name suggests, a free version of the classic game of the same name for the Windows system. This game uses an isometric view to provide players with an expansive environment to play. The game is centered around an alien invasion in which your character is one of the sole survivors. Your goal in the game is to face down the aliens while surviving as best you can.

The gameplay in this app is quite straightforward. You'll use your left thumb to control the direction of your movement, and you'll fire grenades with your right thumb. You won't have to worry about aiming since the game takes care of that for you, so the only thing to worry about is actually pressing the button that fires the weapon.

One of the most interesting aspects of this version of the game is the full history mode that lets you try to find out why the invasion is occurring in the first place. As you progress through the game, you'll unlock new equipment, items, and aid. While the graphics in this game aren't anything spectacular, they are still decent considering the age and free cost of this game.