This is..
.. without a doubt THE most original game I have ever played.
It may not be the GREATEST, but it's definitely up there in the Top 10.
Maybe work on the graphics (I'm not a big fan of the 8-16=bit style, but that's just me), maybe some music or sound would be good, and possibly a reward for finding all endings. Also, a few more endings (obviously requiring added elements) to the game wouldn't hurt.