Overview

Players control waterproof robots swimming in a line while a ravenous shark chases them from behind. Each round, players simultaneously play numbered cards to determine movement order — the lowest untied number moves to the front. The robot at the back of the line gets bitten and loses a limb. Lose all four limbs and you are eliminated. The last robot standing (or the front robot when only two remain) wins.

Components

• 6 robots of different colors (with removable arms and legs)
• 42 cards, numbered 1-7 in 6 different colors (7 cards per color)
• 1 shark

Setup

1. Each player takes a robot and all cards matching that robot’s color.
2. 5 players: Remove the “7” from each player’s hand.
3. 4 players: Remove the “6” and “7” from each player’s hand.
4. Place all robots in a random-order line in the center of the table, lying down as if swimming.
5. Place the shark at the end of the line, at the feet of the last robot.

Turn Structure

Each round has three phases:

1. Choose Cards

• Each player secretly selects a card from their hand and places it face down.
• If cards have been previously played, the new card goes above the played stack.
• When all players have chosen, flip all cards face up simultaneously.

2. Move Robots

• The player who played the lowest untied number moves their robot to the front of the line.
• Then the next lowest untied number moves to front, and so on.
• Tied numbers do not move — any player who played the same number as another player stays in place.

3. Get Bit

• First round only: Skip this phase entirely.
• The robot at the back of the line gets bitten by the shark.
• That player removes one complete limb (arm or leg) from their robot.
• The bitten robot moves to the front of the line.
• The bitten player picks up ALL their previously played cards back into their hand.
• If a robot loses all four limbs, that player is eliminated.

Card Recovery: Any player down to only 2 cards remaining in hand picks up all their played cards back into their hand (even if not bitten). Previously played cards remain face-up and visible to all players.

Actions

Players have one action per round: choose which numbered card to play. Card selection is the sole decision point — all other resolution is automatic.

Scoring / Victory Conditions

• The game continues until only 2 robots remain.
• As soon as this happens, the shark eats the robot in back, and the player whose robot is in front wins.

Special Rules & Edge Cases

• First round exception: The Get Bit phase is skipped during the very first round of play.
• Tied numbers: Players who play the same number as any other player do not move at all. This applies even if multiple players tie.
• Card visibility: Previously played cards stay face-up so all players can see what others have played and what remains in their hands.
• Card pickup on bite: When bitten, that player recovers ALL played cards, giving them a full hand again.
• Card pickup at 2 cards: If at any point during the Get Bit phase a player has only 2 cards in hand, they pick up all played cards.
• Elimination: A robot with no remaining limbs is removed from the game entirely.

Variants

• 2 Players: Each player controls two robots. Remove “6” and “7” cards as in a 4-player game. The player whose robot is first eliminated loses.
• 3 Players: Each player controls two robots. Play normally until a robot is eliminated — that player loses. The frontmost surviving robot’s player wins.
• Memory Game: During the Get Bit phase, all previously played cards are turned face down instead of staying visible.
• Longer Games: Remove only half a limb each time a robot is bitten instead of a full limb.

Player Reference

Player Count	Cards per Player	Cards Removed
6	7 (1-7)	None
5	6 (1-6)	Remove 7s
4	5 (1-5)	Remove 6s and 7s
3	7 (1-7)	None (2 robots each)
2	5 (1-5)	Remove 6s and 7s (2 robots each)

Round Checklist:

1. All players secretly choose and play a card face down
2. Reveal all cards simultaneously
3. Lowest untied number moves robot to front; repeat for next lowest
4. Back robot loses a limb, moves to front, recovers all played cards
5. Any player at 2 cards in hand recovers all played cards