Better than most...
But I have trouble with getting the beat right for each song. It doesn't seem to change from beggining to end, while the song goes faster and slower continuosly. Also the beat meter was no help, It never told me at what point on the beat meter to press at, did it only work on the first blip? Was it when it was flashing? Or when it wasn't? It also seemed like the exact same beat for each song. Or at least for the ones I tried. This is an improvment over basic tetris, but you dont seem to explain the twist very well. Also it seemed very very picky about whether the beat was in time or not, maybe you should modify it so its a bar that fills quickly for the next beat instead of the confusing white blocks. That way theres no confusion, and the timing is much more precise. People can't react to a beat they don't know that fast with only one flash. Reaction times won't allow this. But if it was a filling bar, then people could anticipate the beat, and learn it faster.