I don't know what to say about this atrocity of a film.
It's basically one guy in the midst of a zombie apocalypse who then stumbles into survivors. One just happens to be a born leader, another a nurse, another one a C.I.A agent, and one's a scientist yada yada yaa. We then get loads of dull boring dialogue and wouldn't you know it, The group are trimmed down just enough so that all of the survivors end up paired off with each other (Yawn)
Add to this some very basic make up effects (Chewing an alka seltzer does not a zombie make), poor acting and a pace that your average garden snail would leave in a cloud of dust and you have Extinction.
One nice twist is that the zombies do mutate in this film and evolve, which I thought was a nice idea. However, when it's as poorly executed as this the nice idea is killed off. I mean, I can accept the fact that the zombies mutate into black faced devil type creatures but I can't for one minute buy the fact that their clothes evolve into jogging pants and hoodies at the same time.