Goal: Prove your knowledge of the world and catch the AI when it slips up!
Hallucination is a quick, high-energy trivia game where players try to answer questions and verify whether the AI got its own answer right. The AI host sometimes slips up, and players earn points for catching those errors—but only if they can prove it. It’s a creative, family-friendly challenge that mixes trivia, fact-checking, and strategy.
How to Play
- The AI asks a trivia question.
- All players declare their answers.
- The AI reveals what it believes is the correct answer.
- Players earn 1 point if they answered correctly (0 if they didn’t).
- If a player thinks the AI is wrong, they may call “Hallucination!”
- To earn points for the call, the challenger must prove the AI wrong using either:
- A simple majority vote from the other players (abstaining counts as against), OR
- A reasonably credible source, such as a recognized educational site or a more accurate AI model.
- A simple majority vote from the other players (abstaining counts as against), OR
- A successful call awards 2 points.
- A failed call deducts 1 point.
- Play continues for a set number of rounds or until someone reaches the target score.
Rule Variations
- Silent Signal Mode: Instead of shouting “Hallucination!”, players tap the table twice or use a fun gesture to declare a challenge.
- Co-Op Mode: Players work together to reach a shared score before running out of time or rounds.
- Confidence Tokens: Each player starts with 3 tokens. Calling a hallucination spends a token. A correct call returns the token; an incorrect one loses it permanently. When a player runs out, they cannot challenge until they earn one back through correct answers.
- Team Mode: Split into teams and have each submit it’s best and brightest answer to each question.
- Speed Rounds: Only the first player to respond can earn points, but a wrong answer costs a point…
Example Rounds
Example 1:
AI: “What planet is known as the Red Planet?”
Players: “Mars.”
AI Answer: “Venus is often known as the Red Planet.”
A player calls “Hallucination!” and checks NASA’s site, finding ‘Mars: The Red Planet.’
Outcome: The proof is solid, the group agrees, and the player earns 2 points.
Example 2:
AI: “How many continents are on Earth?”
Players: “Seven.”
AI Answer: “There are seven continents on Earth.”
No hallucinations. Players who answered correctly receive 1 point.
Prompt Library
| Category | Prompt | Difficulty |
| Geography | “Name a major river in Asia.” | Medium |
| Science | “What particle carries a negative electric charge?” | Hard |
| History | “In which century did the printing press spread across Europe?” | Medium |
| Nature | “What type of ecosystem receives the least rainfall?” | Easy |
| General Trivia | “What is the longest-running human-made structure in the world?” | Medium |