But it's still a bit crap. The levels themselves aren't badly designed, with four episodes of total, each made up of about 8 levels each. The non-shareware levels each have a distinctive theme, such as black magic, or the netherworld. And each level comes complete with various nasty traps. It's not just monsters you have to watch out for.
Spikes fly out of the wall, things drop from the ceiling, and at one point, the stairs fall away.
There are not as many monsters as there were in Doom , though. The most you'll ever get coming at you at one time is five - there is none of the huge ambushes that you got in Doom . Though that might be a good thing in Quake - the baddies in Quake are stronger and better armed than Doom's hellspawn. The use of 'true 3D' isn't all that evident, except for the damn ledges. The ledges are possibly the nastiest things in Quake .