It was nice and relaxing. I liked that you can't fail so it wasn't any stress. I dislikes the sudden volume changes when you turn multiple blocks at the same time, the volume of the "block turning" sound effect adds up way louder than anything else in the game. Otherwise the music and sound design was quite okay, though the music got quite repetitive after a while
The 2 most efficient upgrades are Bounce chance and Cost reduction. Because the work on a 1/(1-x) basis, as you approach 100% they become insanely powerful.
You can fit more than 4 extractors in one box, 5 is easily achievable by starting with one in the middle and putting the others around. In fact, you can even fit 6 or 7 of them in the box, since only about a thrid of the extractor needs to be inside the box for it to function properly.
Here is a bug: I go to a high level place and start a fight. I lose the fight then rest. The next thing that gives me gold (fight or shopkeeper income) grants me immense ammount of gold, whereas text displays only 1g income, I actually earn 8000 gold
If you jump then hit the side of the block while pressing the right(or left depending of wich side of the block you face)key, mario sticks to the block, not falling anymore and not moving until you release the key.
And please make a level transition. Otherwise not bad so far since it's in development.(Will rate once game is a bit more advanced)
Added !