Copycat game, like the rest of 12000 tower defense - mazer games.
The good:
- Quadratic building floorplans.
- I value the effort.
The bad:
- Bad UI, takes up a lot of screen estate
- Bad controls, ESC or space doesnt clear up current tower selected
- Repetative, boring, cheesecake strategy.
Verdict: Two stars.
Pretty neat idea, pretty bad execution.
Maps can be winned, but I think this dedication should be not required to reach level 6...
Keep on, work on it. Two and half stars for this stage.
So.. from a game perspective this lacks depth, options, a good interface. So I would not rate it high.
From a programming exercise or milestone perspective it has a lot of good features, things are nicely implemented and I think you are on a good way to make good games later or add more options to this one. Thumbs up! :)