It's fun, not for the faint of heart - definitely the most complex zombie apocalypse survival game out there. While I do appreciate the iron man mode in many games, I never like it when it's non optional; playing for months on a character only to have it get scratched and turn zombie because of a teeny tiny mistake is not fun, it just makes the game very tense and stressful. Some might say that it's intended, but again: make it an option and everybody's happy. The truth of the matter is probably that the game remembers a lot of what you visit and savegames end up consisting of thousands of files, so keeping multiple saves is not easy, saving takes a long time - some optimization there (as simple as keeping assets as a fifo list with a count limit instead of time based in an area ?), and even limiting to one manual save / playthrough would go a long way, as it stands I'm backing up my saves manually which seems unnecessary. That and the combat being a bit too clunky for my taste is why I'm not going 5 stars on this - but definitely worth keeping an eye on at the very least. A side note on a review from another user: the game is updated on a regular basis, do keep in mind that you'll need to use Galaxy to install the experimental versions.