There is no other game like it. I loved the character mobility, the powers and how edgy everything was, especially the amount of collateral casualties that occurred if you engaged in combat in the middle of a crowded area. I must have replayed it about four times. My favorite part was the halfway point of the story, when the city wasn't completely overrun and you could witness some pretty cool situations with the soldiers fighting the monsters. Prototype 2 failed to recapture the magic, but by god if I hadn't wished Prototype 1 had the tendrils power of 2.