Interesting concept. The levels range from very easy to very hard. I haven't been able to solve any of the code hints.
Bug report:
- The final entry field in level 34 is one letter too long.
- The "Support Us" screen that appears after completing level 50 gets covered up by the level select menu. Also, the "Home" screen says only 49 levels have been completed.
- Sometimes the last letters of the level win message don't move with the rest. (Unless that's on purpose for some code?)