The game starts aboard a spaceship orbiting planet earth. A crazy scientist, a robot dog with four arms and a man in the ultimate combat suit peer at a screen showing a massive alien vehicle eating up a major city on the planet below. You step into the airlock and fire yourself towards the planet, time to sort these alien dudes out!. The game is a 3rd person (camera behind the player) shooting game. You get to control the 3 main characters, the crazy sniper head man, the robot dog and the nutty professor, and each character has different abilities. The 3d engine is superb, allowing you to zoom in on enemies from miles and miles away using the sniper head attatchment, which plays a big part in gameplay. nothing too complex, just get through the levels and defeat the enemies along the way. What sets this game apart from the rest are the enourmous sci-fi locations which you travel through and explore. Some areas are truly breathtaking as a sense of sheer size and scale is conveyed. if Flying, running and blasting bad guys with big weapons in fantasy landscapes is your bag, you're sure to dig this game. really well presented and thought out, this should see you through a good 10-20 hours of playing before you finish it.