In an abandoned city, several experimental portals were opened to another world. But things went terribly wrong and monsters got into our world. To stop the invasion of mutants, you must destroy the portals. Grab your weapon, and stop the invasion. Good luck!

Control keys:
WASD - Character movement
LKM - Shooting
F � Pick up weapon
1,2,3 ... Change weapons
SPACEBAR - Jump
SHIFT - Sprint