Emojidoku

Emojidoku is a sudoku game with a twist! Try to fill every empty square with emojis as numbers from 1 to 9. You must obey following rules: 1. Every row must contain numbers from 1 to 9. 2. Every column must contain numbers from 1 to 9. 3. Every 3x3 square must contain numbers from 1 to 9. There's also a mysterious code. What could it be? Psst. You can ask the developer. Enjoy the game!