About SharkMagedon (サメマゲドン）, from BoardGameGeek:
A card game in which you create the strongest shark and fight against land, sea, and air enemies. A partially-blind bluffing game. Players want to build up the best sharks to attack either land, sea, or air enemies, never fully knowing which locations the enemy cards belong to played by your opponents.
On your turn, you can either call for “Sharkmageddon” or decide to draw cards. Card draws help the player boost their sharks by adding body parts, or hurt players by adding enemy “human” cards facedown.
Sharks are divided into land, sea, and air depending on the color of their heads. The sharks battle the enemy cards of that same type. Any player can begin "Sharkmageddon" at the beginning of their turn, but only the shark with the highest combat power can challenge the enemy and earn points for that location. When “Sharkmageddon” begins, player compare attack power of their sharks by location. An “air” shark has no relation to a “sea” shark and do not cancel each other.
From here, all enemy cards played are revealed and placed in their different locations. The feeding frenzy begins, the strongest shark for each location attacks the enemies. If the fighting power is greater than the enemies` collective power, the player collects the cards and earns those points. If the strongest shark is weaker than the enemies, the shark is wasted! All sharks used for that “Sharkmagedon” attack are discarded.
When the deck runs out, the player with the most points wins.
