Gemedet is a two-player D'ni board game. Its cube-shaped board is an illustration of the D'ni's experience with 3-dimensional thinking, a necessary skill when living in a network of caves.
Players take turns placing red and green marbles on a cube-shaped board, using special tweezers called re'dantee. The board is a 9-by-9 grid of spaces on nine separate layers. The name of the game, which means "six-in-a-line," is indicative of its goal: to connect six marbles in a straight line horizontally, vertically, or at a diagonal. In a way, it's a 3-dimensional version of Tic-tac-toe or Connect Four.
Explorer Parker presented his recreation of Gemedet at Mysterium 2015.
- Tumblr post, Mysterium Tumblr