Cairn

A stone-stacking strategy game about territorial control and vertical dominance. Place stones on empty cells or take over opponent stacks by building higher. Score by stack height plus 2x2 territory bonuses. How to Play

Join a Match

  • Goal: Score the most points by controlling stone stacks and forming 2×2 territory blocks on a 6×6 grid.
  • Controls: Tap/click any highlighted cell to place a stone.
  • Place on empty cells: Creates a new stack of height 1 under your control.
  • Takeover opponent stacks: Place on an opponent's cell (height < 5) to seize control and increase height by 1.
  • You cannot stack on your own cells — only empty or opponent-controlled cells.
  • Height 5 stacks are locked: No one can place on them again. The owner keeps those 5 points.
  • Scoring: Your score = sum of your stack heights + 4 bonus points for each 2×2 square you fully control (overlapping bonuses stack).
  • Game length: 30 total turns (15 each). After all turns, highest score wins.
  • Tiebreaker: If scores are tied, the player controlling more cells wins. If still tied, it's a draw.

Demo

Player 1
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Move 0
Player 2