The game is played on an 8x8 grid. Each opponent has 1 king, and they share 9 pieces of each of 5 colours. Each turn, a player moves their king 1 space orthogonally or diagonally and adds 1 coloured block to the board. The first player to surround the opponent's king wins. This basic version is very close to Isolation. Differences: You add pieces instead of taking them away. The board size is larger (8x8 instead of 6x8). There are fewer pieces (45 instead of 46). The advanced version allows a player to escape if there are two pieces of the same colour adjacent to the king. The game continues until no such escape is possible.

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