Prismku: Rainbow Sudoku

Tip: for the best experience, play full-screen at https://prismku.com

Prismku is Sudoku with colors instead of numbers. Fill the grid so no color repeats in any row, column or box. Every puzzle has exactly one solution.

Play free in your browser at https://prismku.com

- A new daily puzzle for everyone, with global leaderboards

- Four sizes: Easy 4x4, Medium 5x5, Hard 6x6, Expert 9x9

- Pencil-mark notes mode

- Colorblind mode, achievements, and shareable results

- Installable and works offline