I don't see how anyone could compare RE: Extinction with the first two in this series. In addition to a lack of plot altogether, there are more holes in RE:3 than a golf course and more ripoffs of other movies than I've ever seen. The characters are so undeveloped that most shouldn't even have come equipped with names. Both Olivera and LJ, who were the two leading males in the 2nd movie, are without energy and lack inspiration. The vehicles were outright ripoffs from Road Warrior, especially in the desert setting. In fact, you really get the idea pretty quickly that this movie is set in a desert to save money, whereas the first two movies obviously were pretty expensive in the setting department. Umbrella's board of directors, who meet several times in the flick in an underground bunker, appear to be of the under thirty variety; perhaps they are the descendants of the former management. The bunker is a shameless ripoff of Day of the Dead. The zombie scenes are actually very limited, with few traditional up close yet slow battle scenes. Mostly the zombies in RE:3 jump out of closets with ferocious speed and bite somebody. There are running zombies in this movie, which do not fit the sequence at all.
In general, this was a very poor finale to a good series.
In general, this was a very poor finale to a good series.