It is very easily seen that the developers put a nice amount of effort in the game, or at least to me.
One thing that I noticed after I completed the game was the the difficulty (curve) was nice, the game grew progressively harder, but it never became frustrating. However, there are two extremes in difficulty curves: Being too hard at times (difficulty spike), and being too easy at times. At times, the latter seemed to be the case, as I only had to retry a level four times at max, most of the time.
It was fun to see that the developer made nice levels with only a few different kinds of blocks to construct the levels with. The new mechanics were showed at just the right time so the levels weren't just more of the same all the time, and to keep piquing the interest of the player. There wasn't an awful amount of levels though, I completed this game in what felt like just a few minutes, but what I played was fun.
The music set a nice tone to the game without being obnoxious, and it was of good quality. The graphics were nice too, although the fact that the player sprite spins while jumping didn't seem congruent with the otherwise blocky 2D environment/levels.
One of my major complaints is that the collision detection felt off or quirky at times, not landing on a block when it should have, falling of blocks before you are even 'off' them (which hindered some jumps).
All in all, it was good game and a fun way to kill some time. I hope you will make more fun games like this.
- ThaB00MZ0R