good game, but the difficulty curve is not very friendly, also, baloons have a spherical shape, that makes the player slip away from the surface.
i really liked the idea though.
We should have done some playtesting, we'll keep that in mind for next time. Also, it's funny that you mention the shape of the balloons making the player slip: the collision shape is supposed to turn into a cube when the player is on top of it, in order to prevent exactly that. Anyway, thanks for the feedback !