Good game, good puzzle! Though sometimes it's rather physics game, not puzzle(You need to execute some complex actions via physics, not just theoretically think about solution and then simply do it), but that part of game is good too. But sometimes physics element break the puzzle one(the fallen cubes sometimes can be uncounted, cuz physics just got wrong)
Though I passed to sixteenth level I doesn't get any new mechanics. There's only red and white cubes, white ones need to be dropped in the basket, no one cube should fall on the ground. So I've get bored.
But it obviously game for time killing & relax, for mobile platform, so in this point problem of lack of mechanics not that much problem.
4/5