This Sudoku game is awesome! You can really tell how much love went into the visuals and music, and the feedback it gives is super helpful. The only tiny thing is, it gets harder a bit too fast. Maybe you could make the fill patterns more interesting—like, each level could spell out a word, and a few levels together might form a hidden message or a cool Easter egg.
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Thank you for your feedback.
Yes, I understand your point about the difficulty, I had a hard time getting through the last 2 levels myself (can you imagine drawing these pictures and not being able to solve the puzzle? funny)
In reality, the progression only increases by two lines, but it can still be difficult. Maybe if there were a little more levels, it could be stretched out better.
Thank you for your advises