Alibi: the whiteboard lying game that scales from beginners to advanced
One person invents where they were last night, the class asks questions to catch them lying, and you can run it with eight students who know fifty words or fifteen who argue in paragraphs—same game, zero prep.
Park English · 2026-08-29 · 4 min read
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You walk in Monday morning and the photocopier is jammed, or you finished the textbook unit with twelve minutes left, or one student is absent and the pair-work plan is ruined. Alibi runs on a whiteboard and nothing else, fits any class size between eight and fifteen, and stretches from basic past tense up to conditional interrogation depending on how hard you let them push.
How it works
One volunteer leaves the room. While they are out, the class decides on a crime: "Someone ate all the snacks in the teacher's desk," or "Someone drew on the wall," or with older groups, "Someone hacked the school server." The volunteer comes back and has sixty seconds to invent an alibi—where they were last night, what they were doing, who they were with.
The class then has five minutes to ask questions and catch them in a lie. If the volunteer contradicts themselves, changes a detail, or hesitates more than three seconds, they lose. If they survive five minutes with a consistent story, they win.
That is the whole game. The rest is how you tune it.
Scaling by level
Beginners (elementary high / middle low): Write six question frames on the board before you start—Where were you? What time? Who were you with? What did you eat? How did you go there? What did you wear? The class picks from the list. The volunteer's alibi can be three sentences: "I was at my grandmother's house. I ate dinner. I went home at 8pm." You are drilling question formation and simple past, and the lying part keeps them awake.
Intermediate (middle mid / high low): No frames. The class asks anything, but you enforce one rule: every question must use past tense correctly or it does not count. Write bad questions on the board as warnings. The volunteer can lie about anything—times, people, weather, what they wore—but they have to track it. This is where students start genuinely trying to trap each other, and where you see who is listening and who is just waiting for their turn.
Advanced (high mid and up): Let the class ask follow-ups. "You said you were at the library—which library? What floor? What were you reading? If you were there at 7pm, why is the library closed on Mondays?" The volunteer has to build a whole false evening and defend it under pressure. Run this version and you barely speak for ten minutes. They do not notice they have been speaking English the entire time.
What actually happens in a Korean hagwon room
The first time you run it, someone will ask a question in Korean. You write the question in English on the board and make them repeat it. By the third round, they ask in English first because they have learned that Korean questions do not count.
Someone will try to ask a joke question to make their friends laugh rather than to catch the volunteer. Let it go once, but if it derails, stop the clock and remind the class that funny questions that go nowhere waste everyone's time. They adjust.
The volunteer will freeze. When that happens, give them one free pass: "You have three seconds to think, starting now." If they freeze again on a different question, they lose. This keeps the pace up and teaches them that hesitation is an answer.
Variations that work
- Pair alibi: Two students leave the room and invent the same story separately. They come back one at a time and the class asks both of them the same questions. If the answers do not match, both lose.
- True alibi: The volunteer tells the truth about where they actually were last night. The class has to guess whether it is true or false at the end. This works better with older students who can lie convincingly enough that truth is not obvious.
- Timed rotation: Every student gets one minute as the volunteer across the whole term. Keep a list on the wall. No one escapes.
When to use it
End of class with time left over. Post-exam when no one can think. The day before a break when they are already gone. Any Monday.
You can run Alibi in ten minutes or forty. If you have a full period, do three rounds and then give the class two minutes to write their own alibi on paper as homework—where they were last Saturday, in five sentences, and it has to be checkable. Next class, read three aloud and vote on which one sounds fake.