I really want to like this more because of the map restriction concept but unfortunately there seems to be a lack of quality control here because I only found about a 1/3 out of these 64 maps pretty good while the rest are just absolutely awful.
once you play through one map, you pretty much have seen the rest. loads of zombies and imps in hallways, all monsters are not flagged deaf so they will wander. there's also tons of barrels in just about every level. that being said though, the gameplay is surprisingly good, you get to slaughter hordes of weak monsters most of the time and it's fun. the only bad thing about this is that there's no real theme, and there are very few differences between the maps. it's monotonous, but it is fun.