Hi Hijong, I enjoyed this game very much. However, there is a problem I am having with the controls.
Reconfiguring the controls simply doesn't work. As soon as you input the last key for "pause", it immediately opens the control assignment prompt again, sending you into an infinite loop and leaving you with no choice but to close the game.
I am used to controlling the game with the arrow keys and as it stands, configuring the controls isn't possible because of this glitch.