Neat game, just wish the collision were more consistent.  

I couldn't start the game, do you think you could make a webGL version too?

The game looks very cool but I had to spend a good few minutes guessing the controls. While the crafting mechanic and inventory system is well polished, the attack system was not consistent. For example, at certain angles or positions, you could not mine the rock in front of you. Overall, I think the concept is interesting and with more time, I'm sure you will be able to create a more refined game.