Original number puzzle with dice algorithm and match 3 rule.
If you want to relax with fun, 3132 is good for you.
3132 is easy to learn, you only need swap numbers to match 3. But you only have several moves. You must be sure every move is worth. While like dice game, you can roll special numbers without moves. Roll to proper numbers and find best way to solve level.
If you fail, you can restart it again and again without any cost. Also you can use coins collected when you play to continue with extra moves.
Five grades, all unlocked.
Infinite levels, maybe?
Good Luck!