Zombie Exodus; I am posting your link - not.
A zombie IF. Well written for most parts but left the story incomplete without fore-warning. Acceptable but leaves a bad taste in the mouth. Part 3 requires moola and a smartphone, while part 4 was in development; both a serious turn-off.
After some reading, I decided that this game does not deserve to be posted.
Here's an excellent review for those who are interested: http://www.ministryofpeace.com/if-review/reviews/20120309.html