Thanks for your feedback.
I'm considering to implement the two button design. I have been suggested also an alternative keyboard mode where the left and right cursor keys would rotate the selected column and two other keys for switch and fast drop. In case I change to the two buttons I'll also add this.
Regarding the fullscreen mode, it is a problem. It is quite slow on old computers to upload the entire screen do many times per second. Since I do not use 3d accelerator fuctions I do it all with the main cpu. It is expensive to paint that number of antialiased lines, and to keep the audio playing with low latency. I assumed a number of simplifications to make it sure the game would run equally well on old computers with unreliable 3d cards.
I'll also reduce the time that the loading screen is displayed. In fact I just forgot to do this. On the full version there shows more text and the time is ok.
I'll also would like to know what's the price tag you consider fair for this game, and what's the amout you'll pay without a second thought.
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