Alien Slayer 3D - First Person Shooter. Your mission is to take care of an alien infestation, make sure that they will never return. Another great 3D Doom-styled shooting games to play for free.
Use the arrow keys or the WASD to move around. Use the mouse to aim and fire. The green dot to determines the perfect moment to fire. Try to aim for the head.
R to reload. Press space to open a door.
Press 1,2,3 to select weapons.
4,5,6 to use special skills.
Press C to go to the upgrade screen when you have levelled up.
Press M to use a medikit.
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