Very nice game! The only things left to desire are mouse support and save option. Also, there could be an option for a really big puzzles (double of current size).

Very nice. Will test out more later.

Excellent game! Looks great, very addictictive. Love it! Well done :-)

On a level, the game considered I had won while I still had to make some moves on the lower border.

I have several of the original games from Infinity Games on my phone. I like them :) Some suggestions as you asked:

• Please try to implement some rotation animation like the originals.
• Perhaps different colors per level?
• Antialiased lines would be nice.
• Title screen, in-game menu, difficulty settings.
• Some kind of scoring system.

This is a pretty good game. The problem is it congratulates you by playing music that sounds incredibly off. Not how you'd like to be congratulated after wracking your brain
What I mean by off: dissonant chords. Talking to you, minor second chord

The music is nothing but minor second chords. Nobody wants to listen to those.