Brave Rats is a 2 player imperfect information card game. Both players begin with 8 cards, numbered from 0 to 7. The goal is to collect 4 points via a series of rounds.

In each round, both players simultaneously play a single card from their hand. Generally, the higher card wins, and that player receives 1 point. Cards are discarded after use. If the card strengths are tied, the round is put on hold, and the next decisive round wins the round on hold as well.

Each card has a special ability:

• Musician (0) - The round is automatically put on hold.
• Princess (1) - If played versus the Prince, you automatically win the game.
• Spy (2) - Your opponent must reveal his next card.
• Assassin (3) - The lowest strength wins this trick.
• Ambassador (4) - If you win this trick, you win 2 points instead of 1.
• Wizard (5) - Your opponents ability is nullified this round.
• General (6) - In the next trick, your card gets +2 strength.
• Prince (7) - Immune to the Assassin.