I am planning to add more levels and features in the future. Please suggest a level theme or a character skill and I will probably add the highest rated ones to the game.
Awesome game, reminded me of double dragon series. Not slow and no lag on my laptop. Agree that the author should warn that some of the upgrades are single use. One more thing the text in the story is painfully slow. Otherwise a very nice game. Congrats to author(s).
The game is kind of difficult, requires you to try many combinations after a while it becomes tedious. In the original Sudoku this happens only in the difficult cases while the simpler ones are much more enjoyable than this twist.