What is Reaction?

Reaction splits a room into groups of six to twelve. Every player writes an event on a slip of paper and drops it in a container, then three or four players from each group draw one blind and act out their reaction to it — staying in character, noises and a little dialogue allowed — while everyone else tries to guess what actually happened.

It works because nobody ever hears the event out loud, only the reaction to it, which means guessing takes real attention to a raised eyebrow or a fumbled line. The events themselves are homegrown too: every slip in the container came from someone in the room, so a wrong guess means missing your own teammate's idea of chaos.

Skip it with a group too small to split into groups of three or four actors per round, or with people who'd rather not perform in front of others — Reaction asks everyone to eventually take a turn acting, unlike games where you can hide in the guessing crowd all night.

The rules

Form groups of 6–12, or pick 4 or 5 volunteers to perform in front of a larger room.
Every player writes an event on a slip of paper and drops it in a container.
Within each group, choose 3 or 4 players to act for the round.
Each actor draws an event blind, without revealing it to the others.
They react to it in character for 30 seconds to a minute — noises and in-character talking are fair game, not just gestures.
The rest of the group calls out guesses; a point per correct guess is optional.

Before you start

Group size: 6–12 per group. Running this with a very large room? Skip splitting into groups entirely and pick 4 or 5 volunteers to perform at the front instead — fewer slips and pens needed either way.
Hand out paper and pens. Small sheets work best. Every player needs enough to write down at least one event.
Set the boundary before anyone writes. Say it out loud first: no real violence, trauma, or targeted jokes. It keeps the container full of events people actually want to act out.
Get a container ready. A hat or small bag both work — anything the group can draw from without seeing inside.
Decide the talking rule. Default play allows noises and in-character talking. If you want the stricter version, say upfront that it's gestures only.

How to run it

Divide the room 1–2 min
Split into groups of 6–12, or pick 4 or 5 volunteers to perform in front of the whole room if the group is too large to split.
Write the events 2–3 min
Every player writes down an event on a slip of paper. Push for specific and strange over safe — a shark attack while fishing lands better than a rained-out picnic.
Collect and choose your actors 1–2 min
Gather the slips into the container. Within each group, pick 3 or 4 players to act for the round.
Draw blind 30 sec
Each actor draws one event from the container without letting anyone else see it.
Act out the reaction 30 sec – 1 min
Each actor reacts in character, staying true to the person they're playing. Noises and in-character talking are allowed — this isn't silent charades unless you've said otherwise.
Guess the events 1–2 min
The rest of the group calls out guesses for what each actor got. A point per correct guess is optional — most rounds don't need one.
Rotate and repeat 5–15 min
Swap in new actors and new events until everyone's had a turn, or until the room's had enough.

← the reaction is the whole game.

Facilitator tips

Set the boundary once, up frontSay it before anyone writes: no real violence, trauma, or targeted jokes. One clear rule keeps the container full of events that are funny instead of just uncomfortable.

Let gestures count as much as wordsRemind the room that a look or a flinch communicates as much as a full in-character line — it keeps the game open to people who'd rather not talk in front of a group.

Reach past the obvious eventsA shark attack and a lottery win are the easy defaults. Nudge the room toward events tied to their own experiences and traditions, and more of the group will recognize themselves in the round.

Skip the scoreboardScoring is optional for a reason — a good reaction gets more laughs than a tallied point ever will.

Variations

Narrated rounds

Have a narrator read the event aloud before the actor performs it. The audience is in on it, so the guessing becomes about spotting the actor's specific choices instead of decoding the event itself.

Gestures only

Restrict the acting to noises, no actual words — the stricter charades version, and it pushes the reactions to be more physical.

Whole-room version

For a very large group, skip the small groups and pick 4 or 5 volunteers to perform at the front of the room instead.

Why it works

The event stays a secretGuessers never hear what's on the slip — only the reaction to it. Reading a stunned or panicked performance for clues takes sharper attention than answering a question out loud.

Everyone supplies the materialBecause players write their own events instead of drawing from a shared deck, every slip in the container is somebody in the room's actual idea. Miss the guess, and it's your own teammate's imagination you didn't catch.

Staying in character lowers the stakesReacting "true to their character" gives the actor cover — a big, silly performance reads as commitment to the bit, not as putting themselves on the line.

HELLO, MY NAME ISJon

"I like Reaction because the events are always somebody in the room's specific idea — nobody's shark attack is quite like anyone else's. Watching someone stay straight-faced and in character through something absurd is what gets the room laughing before a single guess lands."

Jon Zajac · Founder & Chief Icebreaker

Reflection questions

5 questions for groups that want the debrief, not just the laughs.

What was your favorite event to act out or guess?Points at which events actually landed — useful if you're building your own list for next time.
How did it feel to react without saying much, compared to reacting with words?Gets at the real difference between the two modes, and which one actually felt more revealing.
Was it harder to guess when there was no narrator explaining the event first?Surfaces how much context actually helps, or whether not knowing was half the fun of it.
How did your group's guessing change as the game went on?Tracks whether the group actually adjusted its approach round to round, or kept repeating the first instinct.
Where else could you run Reaction — a meeting, a classroom, somewhere else?Gets people picturing the format outside this one room, which is usually where it actually gets used again.