Prellus is a game of tactics played on a 4x7 grid of red, yellow, and blue squares. Each player controls seven pawns (one green pawn and two each of red, yellow, and blue) which begin the game in a standard formation. Players alternate turns, moving a single pawn during each of their turns. Pawns can move a single space at a time (diagonally or orthogonally), but may never be moved into a space of their color. Any number of pawns may occupy a square. Pawns are never removed from the board. The board has no green squares, so a player's green pawn may occupy any space; however, a green pawn may not be moved into a space already occupied by two or more pawns, or by the opponent's green pawn. A player loses the game if his green pawn is ever in a space occupied by ANY two or more other pawns.