I liked this a lot! The presentation is great (I love the interface, and the way that the scene itself changes over time is really nicely handled). The primary mechanics reminded me of games like Mu Cartographer and Mirrormoon EP, which really appeals to me. I do agree with Tihan that it perhaps needs a way of discovering where you should be looking. I did find the last two monsters, but the first eluded me. The last one did scare the bejesus out of me though, so well done on that!