Some levels are very frustrating - the second level in particular. I think the scaling of difficulty should be looked at. It is a good idea, but too hard, too fast; for me at least.
Some of the levels are difficult and take time to get right and take a few restarts to get right. The idea isn't anything new, but it is done well. It would be good if you added a story or some funny text in game. Over all it's a fun, cute and sweet platforming game.
Great game! I enjoyed playing it. After level 3 it got to hard for me.
Thanks for the feedback! To pass level 3, have the characters move to the wall, and then place barriers.
It was working well until around the 3rd level, then all of a sudden the little blue guy disappeared. A restart fixed it, but that was kind of glaring. There is also an abnormally long delay in getting the reset function to work. The green guy could use a few frames of animation to make him more interesting, maybe just the head bobbing up and down. It isn't bad, but it could be more interesting.
Just no death animations, try to pass to next levels, please write to my opinion.