Different, in a good way.

Very unique graphics. Very unique subject. Good music. A little single threaded as some have mentioned - the main activity is catching prey. Finding water, locating new shelters, meeting other animals would make it more interesting.

Others have said performance lags. I’d have to say their Mac lags. Game is flicker-free on my quad-core iMac w/dedicated graphics card. Don’t expect highly graphical games to run well on the new 12” MacBooks, MacBook Airs.

R. W. Keller about Shelter 2 Complete Edition