Now this is a very nice concept. Brilliant in its simplicity, yet it can still offer a challenge to get a score as high as possible. The hand-swap feature was very nice and I guess I will have to see which hand is the best to use.
Perhaps a few nice cosmetic enhancements can be if reaching the end of a maze gives you a short "level complete" notice (which the level itself still visible), and when you die it could be nice to see yourself explode or something before the screen goes black with the "You died" notice.
Oh, and using music in the chiptune genre was also an excellent choice given the game's theme and presentation in general.
I see you also have a downloadable version (I now only tried the web version), which is something I applaud, as it does allow me to play the game too when my internet is out.
I love it!