For me, it crashes every now and then (much more frequent when running for long periods of time or when having many zombies on the screen). It then freezes, and jumps me back to a really odd looking main menu (with the frozen screen stuck on the back). At this point, I will have to reset, and when I load it up (the original save, not the "crashed" new save), I will go back to my last save point (usually after sleeping). If I do load up the crashed new save, it won't load; basically just a black screen. There was also this time when I crashed 4-5 times continuously, all of me trying to run north across town. I noticed that whenever I crosses a certain section (linear invisible wall, if you will) it freezes up. Every time I crashed, I would try again. The last time, I ran "around" it. Perhaps the game wasn't loading the map fast enough? Windows 8 64-bit (6.2 Build 9200) LENOVO Intel® Core™ i7-3520M CPU @2.90GHz (4 CPUs), ~2.9GHz Memory: 8192MB RAM DirectX Version: DirectX 11 Intel® HD Graphics 4000 NVIDIA GeForce GT 630M Hope it helps.