Someone suggested me to expand gameplay since it's a very early prototype yet so far. Though, now I added some UI things because I felt it was necessary for comfortable testing. Smooth scrolling and zooming are added; the latter is a bit buggy though.
The maps are now read from picture files that makes the job much **much** faster!
And a new gameplay feature is also added: blocking towers!
Everything new are available at the link above. I'm waiting for suggestions, ideas and impressions.