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Complete puzzles by zeroing out the board! This is achieved by placing the pieces onto the board. Once the piece is placed, the numbers of the affiliated squares on the board will decrease based on the number of the piece. Pieces may need to be rotated or flipped.

Player counts over time, as we observed them.
Source: Steam Web API, ISteamUserStats/GetNumberOfCurrentPlayers. Full methodology
| Month | Average | Change | Change % | Peak |
|---|---|---|---|---|
| October 2026Oct 2026 (from 30 Oct) | 0 | — | — | 0 |
Average and peak concurrent players each month, and the change in average players from the month before.