Irritatingly addictive! Although there are a number of significant faults in this game, I couldn't help but come back to it and love finishing it. Powering up the monsters was thoroughly satisfying, but it was only in the last few levels that I realised you could power up the nests/crypts as well.
An excellent difficult rating, not too easy but not too hard (though I appreciated the choice between easy and medium). And the diverse range of monsters, each with their own strength and weaknesses added to a surprisingly deep level of strategy. The gameplay was truly excellent, really well polished.
It was therefore something of a surprise to see the low standard of English. It amazes me that someone could create such an excellent game but detract from the polish of it with clumsy spelling and poor grammar. The story, though relatively unimportant, deserves at least a quick spell check.
Achievements are always good for replayability, but it would help to know what to do in order to unlock them! And a greater reward (additional stars, for example) than a relatively useless room with slightly more furniture would be a more satisfying reason to change one's style of gameplay in order to potentially earn more achievements. For instance, I set up rat nests in the first rooms and then proceeded to build long chains of ghosts for the majority of the game. I hardly touched any other creatures once I could achieve this, and it was satisfying enough so that I didn't have to alter my style of playing to win the game.
In terms of bugs, once (very frustratingly) the final enemy on the screen didn't have a health bar. Presumably I had already killed him, but he still stood there attacking my monsters. Eventually, after hitting fast forward to speed up the waiting time, I managed to scare him out of the dungeon by using the fear spell over and over. Additionally, using the fear spell will often cause monsters to leave their rooms as they chase their prey. This is less than desirable for me. Finally, zooming out revealed a number of treasure chests just floating in the air around the edges of the screen.
For improvements I would recommend assigning hotkeys so one can use the keyboard to quickly set up a dungeon type they play often. Making these customisable would probably help since there are so many buttons to choose from once you upgrade all the monster dens.
The graphics could definitely be spruced up, but it has its own kind of charm as a cartoon dungeon.
The music wasn't too bad at all!
Small point, but I don't think that clicking "Done" should make you go back a level. A "previous" button would have made a bit more sense.
A good game, though not without issues. If a sequel is made I'm sure it will achieve even more popularity.
~VelvetDarkRocks~