Almost perfect... almost
I really hope a Super Stacker 3 comes out... even if it's just more of the same.
Anyway, level 21 is almost impossible on the bonus mode. It's like 20x harder than anything else and it's ridiculous how many restarts you have to do just to get something that's even remotely feasible. I wasted a lot of time on this and it's really annoying that it's so hard to complete.
I finally gave up and I'm not going to worry about it anymore... but something needs to give on that kind of situation. Every other level had a way to where it wasn't so bad to solve it on bonus mode. Maybe a couple of triangle to be able to add to the outside of a flat platform to help keep the circles in? Anything!
Better than Totem Destroyer 2, and that's an excellent game as well.