Found something fun this week and had to share.

KillerDoku is a sudoku game with a twist: every grid is a murder case. You are not just filling numbers — each deduction gives up a piece of the story, and finishing the grid means naming the culprit. The noir presentation (rain, case files, silhouettes) does a lot of heavy lifting, but the puzzles are the real draw.

What makes it worth your time:

Hand-crafted variants, not a random fill generator: grids from 7×7 up to 20×20, with extra rules layered on top.

A genuine difficulty curve from easy to nightmare, spread over three planets and 21 regions — great for a coffee-break solve or a long evening.

222 cases, 125 of them free, so there is plenty to try before spending anything (paid packs are $0.99–$2.99).

No install and no account: it runs in the browser and remembers progress locally.

Story you want to read, not skip: each case has a short setup and suspects, so finishing feels like closing a chapter instead of just clearing boxes.

Sudoku purists…