Prismku version history
Prismku evolves every day. Each edition is frozen and still playable here. ← Play the latest
2026-10-30 — First Lightlatest
- Rainbow Sudoku in 4 difficulties: Easy 4×4, Medium 5×5, Hard 6×6, Expert 9×9
- Daily puzzle shared worldwide + endless free play
- Glowing tiles, rainbow marquee frame, shifting patterns and sound
- Server-verified leaderboards, achievements and community highlights
- Colorblind symbols, themes, spoiler-free share grid