Killer Sudoku

About

Killer Sudoku adds a numerical twist to classic grid puzzles. Instead of just filling numbers 1-9, each puzzle includes sections where the digits inside must add up to a specific total. These "cages" layer extra logic on top of standard rules, creating challenges that start simple but grow complex fast. You’ll use deduction to narrow possibilities, balancing math and spatial reasoning. The 200+ handmade puzzles here are crafted by Simon and Mark, plus guest designers known for their tricky brain teasers. This version stands out for its polished presentation and steady difficulty curve. The developers included hints that explain solving strategies without feeling hand-holdy. With support for PC, Mac, and mobile devices, it’s easy to pick up and play in short bursts. Since launching in 2020, it’s become a favorite among logic fans for its clean design and clever puzzles. The community around the game is tight but active, with new challenges added regularly to keep things fresh.