Set of five cast acrylic overlays compatible with Terraforming Mars player mats. The overlay helps to keep the game markers in place during the game. The overlays do not require assembly and ready to use out of box. Just peel off the protective film and place the overlay over the mat. For better experience it is possible to glue the overlay to the mat using double sided tape. PLEASE NOTE: - The game is not included. - This Item has two versions. This is for the FIRST PRINT RUNS not compatible with the Second print version.