Enjoyable for me, but not absolutely omg-fantastic-amazing.

It felt a bit run of the mill, like it had stolen parts from 28 Days Later, Res Evil and Silent Hill and mushed them all together. The head zombie guy was totally Pyramid Head without his helmet or sword.

It did keep me entertained, I just felt like it lacked a certain something. Depth? Twists? Not sure really. They should have elaborated more on the flashbacks, maybe showed how the world’s population was wiped out. They should have explained about how the mother/son survived and got onto the island. His wife and child didn't need to die in the helicopter, they could have just flown away or even separated when she first didn't get scanned properly.

Btw, the CG seemed really, really crap to me. It seemed to have frames missing from the animation or something and ruined the whole scary/creepy feel. And why would a human, infected by a virus developed to kill cancer, be horribly allergic to UV rays?