I didn't quiet like the flashy intro.
About the game itself though it was kinda fun and sorta easy till level 4,then with level 5 it gets more complicated for a begginer player with no experience in sudoku since it felt like a drastic jump in difficulty, from 4 squares with some numbers to 6 squares with lots of numbers.
The music was pretty chill and fitting for this kind of game,definitely my favorite part that also kept me playing for a while till i understood the rules a little better.