This game is great. It looks and plays beautifully. At least that's how I remember it. I bought it here on Steam and it is literally unplayable, completely broken. Lags a lot and flickers in a way you don't see anything on the screen. If you have an old pc get it but anything half-modern won't run it. Until they fix it DON'T, when they do this game is a must.
EDIT: I managed to fix the problem by running the game on my laptop with Intel integrated graphics (2020M) instead of GeForce GT635m, works perfectly now. I never thought that feature would be useful but I'm grateful for it now. Seems the newer Nvidia drivers screw up the game (not sure, anybody who ran it on AMD?). If you have an older pc/laptop or one with this feature - give it a try. Still a thumbs down for selling (and putting on a sale) a game that's unplayable for many without giving a reason why or trying to fix it.