I'm a bit frustrated because the game looks nice and I could really enjoy playing it, but the decision made about the mapping of the controls is really questionable....
Why not let me use wasd to move and space bar to jump, "E" and "F" to destroy/create blocks, or even left click/right click? Would've been so much easier to move around.... The problem with your implementation is that it inverts the classic paradigm of left hand for movement, right hand for actions, so it's very unnatural feeling to control.
The game has good potential if you implement a better control scheme (Controller support would be amazing too)