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Clump

Clump 2023

Design Mark Steere Publisher Mark Steere Games
2
Players
20–60
Minutes
5
Age

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My Prints for Clump

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About the Game

Clump is a two-player game played on a square board of any even size, initially filled with red and blue stones interspersed in a checkerboard pattern.

To win, Red must form a group of red stones (interconnected via horizontal or vertical adjacencies, or both) connecting the two red sides of the board. Diagonal adjacencies are irrelevant in Clump. Blue must form a group of blue checkers connecting the two blue sides of the board.

PlayPlayers take turns swapping one of their stones with an orthogonally adjacent enemy stone, one swap per turn, starting with Red. Players will always have a swap available. Passing is not allowed.

Swaps are subject to the following conditions:

At least one of the swapped stones must be part of a larger group after the swap than it was before the swap. The largest group so formed must be larger than the largest group that would be diminished by the swap. (If no groups are diminished, only condition 1 applies.)

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Mechanics
BGG data
refreshed Sep 6, 2026