This game is one of my personal favorites and it is still the best of its kind while of course there isn't many of this kind of game around. Game still feels fresh and it's enjoyable to play. Playing campaign before skirmish is recommered. I think it's more exciting to get new types of creatures, rooms and rooms one by one as you progress through campaign. If you still haven't given it a try go ahead. You won't be disappointed. About compatibility on Windows 7: I'm running Windows 7 Pro 64bit and I just played two hours without a glitch. The shortcut installer creates on your desktop has the necessary compatiblity tweaks needed to run this game (Win2000, disable visual themes and dekstop composition, run as admin). TD;DR: Great game for great price. Even if you have Windows 7, don't hesitate to buy this. It works just fine!