Fun, though I haven't checked
the level editor yet, though I'm sure it's functional enough. Just got through the tutorial so I can sort of fairly review this. It's a solid puzzler, of the get everything right/no time limit variety. Considering the character can run, perhaps timed elements could be somewhere to expand the design.
There are a large number of different blocks and interactions, enough to ensure a huge number of potential levels, not that there aren't a large number already. The system is flexible enough that you will not always use a certain block in a certain way. The number of different blocks seems a bit overwhelming at first, but the pace of the tutorial is enough to make it clear, if not necessarily comfortable, by the time you move to the next new element.
My complaint with the tutorial is that the importance of using the shift key to hide blocks and objects, especially in that it shows where all the buttons are, is not emphasized, and that would have helped. Just mentioning it in the first level with buttons would have done it.
The option to have a grid would be nice, a button that toggled it on and off. Especially for those times where one push too far means you have to redo the entire level.
With the way it's set up, an undo button seems like a hard thing to do, but if it could be done it would be nice.
As someone else said, the explosion animation is a bit drawn out (yes, even set on low quality on a decent computer), a little less or maybe it could be made so you can walk through it.
The learning curve is a bit steeper than most are used to, and that's turning a lot of people off, I suspect.
As with many games of this type, the actual going through the motions of doing the puzzle is not terribly compelling, it's figuring out what the motions should be that's fun. And yes, that means thinking, sometimes quite a bit of it, and if you're not in the mood for that, well, it's time to play something else until you are. And if you never are, then this is not the game for you. But if you're in the mood for a good puzzler, this'll get you your fix.