Features that would be nice to add: undo (I can't tell you how often my mouse messes me up), save every 5 or 10 levels, a "holding space" (for when you want to switch tiles around you already placed.
All in all, a good game. The hard badge is very challenging.
I guess this game would be good if you like these type of games. I just wish that this game wasn't included in the best of 2007 quest. This game is a deal breaker for me to get that badge (I can't seem to time the buttons right... however I am sure I am hitting them correctly... this is mostly the hold notes ASD)
How do I switch my own weapon? I can't switch from a sword to a bow even though I am holding both (tried page up and the button on the right of the screen to no luck). This is a pretty flawed game. Buggy, difficult to control, and no real goal is apparent in the game.