Neon Factory HTML5 game: Try to remove all neon tiles from the factory. Make groups of 3 or more of the same connected tiles.
Fill in numbers 1-9 in a 9×9 grid
Each row must contain all numbers 1-9
Each column must contain all numbers 1-9
Each 3×3 sub-grid must contain all numbers 1-9
Each number can only appear once in each row, column, and sub-grid