I quite like it, it reminds me of an 80s Games Workshop board game called DungeonQuest. One note though: the tile depicted usually doesn't match the one you pick up (e.g. you click on a straight corridor and pick up a dead end square). Is that intentional or a bug?
Yeah, the tiles not matching is totally a feature... I mean bug. It has to do with the game not realizing there's already a tile on that spot and stacks a second one on top of it. When you click the tile you have a pretty good chance of getting the one on the bottom. Just chalk it up to the Game Master being a jerk.