A group of poor explorers hoping to get rich quickly heads out to recover treasures from some undersea ruins. They're all rivals, but their budgets force them all to share a single rented submarine. In the rented submarine, they all have to share a single tank of air, as well. If they don't get back to the sub before they run out of air, they'll drop all their treasure. Now it's time to see who can bring home the greatest riches.

Game Objective
The game takes place over 3 rounds, and the player to gain the most points over the 3 rounds is the winner. In order to gain points, you must bring the most ruins chips back to the submarine. You can only return to the submarine once per round, and you cannot progress more after returning. You cannot return to the submarine without bringing any ruins chips.

Turn Progression
On their turns, players conduct steps 1-4 listed below. Players take turns, going clockwise around the board, and the round ends when all players have returned to the submarine, or if the air runs out at the beginning of someone's turn.

1) Declare if you will turn back or not.
2) Reduce air.
3) Roll the dice and advance your game piece.
4) Search. (When you have stopped moving, select one of A-C below)
A) Do nothing.
B) Pick up ruins chip.
C) Place a ruins chip.

In Rafter Five, you and your fellow players want to build as large a raft as possible — but you want to end up being the only one who can board it.

To start, stack the box top and bottom to create a base, then place the five wooden rafter pieces on the starting card on top of the base.

On a turn, lift a rafter, place a raft card on the playing area, replace the rafter, then place one of your treasure chests somewhere on the raft...ideally in a precarious position because if someone else knocks off this chest, they must keep it in their hold. If a player collects five treasure chests owned by other players in their hold, they're out of the game! (You can knock off your own chests without penalty, but you're making the game easier for everyone else.)

In Dokojong, a.k.a. ドコジャン, players try to guess where each other's dog is hidden among five tiles. You want to avoid revealing your dog's whereabouts, but if you overact to avoid guesses, your dog may be exposed.