JGOWorlds to explore

Fill the grid so every group of cells satisfies its arithmetic clue.

Available External game
Open Keen Discover the game
The Keen title accompanies a moss-green grid with orange arithmetic clues.

The game world

Discover Keen

In Keen, each digit appears once per row and column. The grid is also divided into groups, each with a target number. Use the indicated operation to narrow down the possibilities. Add pencil marks as you go and change the difficulty or grid size for a different challenge.

Original wordmark and artwork by JGO.

Your adventure starts here.

JavaScript and WebAssembly. The official site documents Chrome, Firefox, Safari and Edge.

Open Keen