Alternative Controls
That's an amazing game, incredible addicting, at first is very hard, it has beautiful music and design, and the most important... it's fun!
But i would like to control the characters with a different configuration. I like to use the left hand to control the movement, like in the consoles and arcades, so I'd have to cross my arms to control by the arrow keys. Putting a alternative control, like ASDW to control movement, and something else to do the teleport thing would be better. ^^
Also, I have some problems, sometimes, the arrows locked and the character kept running to death. u_u
So, I suggest you work some more with the codes of the game, and that would make him perfect. But if you plans to creat a sequel, put some more levels, with most difficulties, and some variable gameplay, with something more than simply transporting and jumping. Congratulations!