Eight armies in two teams of four on a huge cross board.
How to play
Eight armies on one huge 24×24 cross board, two armies on each side. Team Sun (the four armies at the top and bottom) battles Team Moon (the four at the left and right). You command Sun-1 at bottom-left; seven bots take the other seats, and turns alternate between the teams. Pieces move as in chess (no castling or en passant), you cannot capture teammates, and pawns promote to a queen at the far edge. Checkmated or king-captured armies are removed. Wipe out all four enemy kings to win; after 1200 moves, the team with more material wins.