Secret Mission is the reimplementation of Hexdominimum for the Puppy Park set, by the same designer, released as a bonus game. Up to 4 players can play. It can be played with or without the expansion, although the dog houses and tree-poop tiles are not used. To set up, shuffle the tiles face-down on the table. Each player then draws a tile without showing it to the other players, looks at it, then keeps it before them facing down so the other players can’t see it. If both dogs are the same (i.e. it is a double tile) then discard the tile to the supply and re-draw until you get a tile with two different dogs; then reshuffle the supply. This is your "mission tile". Each player then draws a second tile; this is your "playing tile". The first player places her playing tile on the table face-up. Then, starting with the second player, players take turns in anticlockwise order, placing their playing tile on the table adjacent to at least one placed tile so that the tiles fit into an imaginary hexagonal grid, then drawing a new playing tile from the supply (if possible). The dogs of adjacent tiles don’t need to match. The game ends when the last tile has been placed on the table, and each player then calculates her score. For each of the two dogs on your mission tile, find the largest contiguous, connected group of that dog. Count the number of dogs in that group. Once you have counted the largest group for each of your two dogs, multiply these two values to determine your score. The player with the lowest score wins. In case of a tie, the tied player who played her final tile first wins. —description from the publisher