Mordecai and Rigby try to return a crappy board game, but the manager won't accept it.
Tropes:
- Arc Words: "You have to use your imagination!"
- Brick Joke: When the park staff is playing The Realm of Darthon, Benson asks what Darthon actually is, thinking it's the setting of the game or an artifact or the like. Once the store owner traps Mordecai and Rigby in the game and reveals himself, he calls himself "Darthon".
- Calvin Ball: The manager traps the group in the game, and both sides spend quite a while changing the rules as they go along.
- Disproportionate Retribution: Mordecai and Rigby deliberately sabotages the manager's business all because he refuses to give back seven dollars.
- Here We Go Again!: At the end of the episode, Mordecai and Rigby decide to use their refund money on another game.
- Hoist by His Own Petard: The manager thought he had the edge over Mordecai and Rigby when he kept changing the rules in his favor. That is, until Mordecai and Rigby figured out they can do the same right back to him.
- Impaled with Extreme Prejudice: Mordecai defeats the store owner as Darthon by stbbing him with his sword. When Mordecai and Rigby are back in the real world, they find the owner has also benn impaled with a yardstick.
- Loads and Loads of Rules: The Realm of Darthon makes the park's game night get bogged down by lots of minutia. Mordecai frequently has to consult the rulebook, and Rigby is already using a calculator and is preparing to use a protractor when the rest of the group storms off in disgust.
- Nightmare Face: "No refunds!"
- No-Sell: Modecai gains the upper hand when he grants himself the Immunity Sword, which is immune to all rule changes.
- Oh, Crap!: The manager's expression once Mordecai uses the Immunity Sword and proceeds to stab him.
- Only One Finds It Fun: Only the comic store manager thinks The Realm of Darthon is any good once Mordecai and Rigby start exposing the truth about its rules and props to potential customers. This extends to when the game becomes real in the second half.
- Rummage Sale Reject: Exploited when Mordecai and Rigby follow the game's rulebook to create what are considered officially-sanctioned costumes but turn out to look incredibly tacky and dumb in practice.
- Screw the Rules, I Make Them!: The whole point of The Realm of Darthon especially during the last part of the episode. Taken to extreme levels by the manager who kept changing the rules as he see fit. Unfortunately for him, Mordecai and Rigby can do the same.
- Sincerity Mode: After Mordecai and Rigby defeat the manager but realize they stuck a ruler into him, they felt bad and was even going to let him keep the money and offered to take him to the hospital. The manager, however, allows them to keep the money saying they beat him fair and square.
