the little (1.1? iirc) patch they put out strangely fixed the problem i had with enemy ai weirdness. it's still pretty elementary, but i started playing again the other night and couldn't stop. the pedestrian and ally chatter gets old FAST, as they repeat the same 2 or 3 lines ad nauseum, but i can kinda ignore it after a while.
so, yes, it's fun...but wait and see if they release another patch, then
edit: after seeing ranier's post: it never crashed for me, either, but i recently did a clean install of the OS. also, if you're unsure about it, just grab the demo and check it out! This comment was edited on Sep 26, 22:59.