Big Blob
Big Blob is a tag variant in which tagged players join hands with the tagger, forming an ever-growing chain that pursues the remaining free players. As the blob grows, coordination becomes increasingly difficult. The exercise builds group physicality, communication, and cooperative movement.
Structure
Setup
Players spread out across a large open space. One player (or a pair) is designated the Blob. All other players are free.
How It Works
The Blob player(s) chase the free players. When a free player is tagged, they join hands with the Blob - they cannot let go. The Blob grows with each tag. Only the players on the ends of the chain can tag free players (or the rule can allow any part of the chain to tag, depending on the facilitator's preference).
Coordination Challenges
As the Blob grows - four, six, eight, ten players - the chain must coordinate direction changes together. Without communication, the middle collapses while the ends pull opposite ways. Players quickly discover they must vocalize intent ("left!" "turn!" "go around!") and respond to each other's momentum.
Winning
Play continues until all players have been absorbed into the Blob, or until only one or two free players remain (they win).
Safety Note
Ensure the playing space is clear of obstacles. Players should hold hands rather than wrists to allow a clean release if anyone falls or the chain pulls unevenly. Remind players that falls can happen - keep chains moving at a jogging pace rather than a sprint.
How to Teach It
How to Explain It
"One person is the Blob. When you're tagged, you join hands with them. The Blob grows. Only the end players can tag. Last person free wins."
Why It Matters
Big Blob makes ensemble coordination literally visible and physical. The growing chain must solve the problem of group movement in real time - without a leader, without planning, under the pressure of a chase. The key discovery is that the group needs to communicate constantly and explicitly. What feels chaotic in the body maps directly to ensemble scenes: when no one is listening and everyone pulls their own direction, the scene collapses.
Common Coaching Notes
- Wait for the coordination breakdown. Don't intervene when the Blob tangles itself - that's the learning moment. Let the group feel what happens when they stop communicating.
- Prompt during play. Coach facilitators can call "How are you making decisions right now?" as the Blob grows.
- Debrief the problem-solving. After play, ask: at what size did it get hard? What did you start doing differently?
- Scale to group size. For small groups (8-10), start with two Blob players. For large groups (20+), the game runs itself.
- Physical warm-up value. The game generates genuine aerobic effort and laughter early in the session, making it useful as a first exercise to break tension.
Debrief Questions
- When did the Blob start working well together? What changed?
- How did you communicate without a designated leader?
- Where do you see this dynamic play out in ensemble scenes?
Worth Reading
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The Manual of Ensemble Improv Games
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Business Improv
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Val Gee
Improv Ideas
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Pirate Robot Ninja
An Improv Fable
Billy Merritt; Will Hines
Theater Games for Rehearsal
Viola Spolin
Improvisation for the Theater
A Handbook of Teaching and Directing Techniques
Viola Spolin
Related Exercises
Play Tag
Play Tag is a physical warm-up exercise that adapts the universal children's game of tag for an improv workshop setting. One player is designated as "it" and pursues others within the defined playing space; tagged players become "it" and must pursue the next player. The exercise builds physical energy, spatial awareness, and the embodied experience of ensemble interdependence before scene work begins.
Category Tag
Category Tag is a variation on tag in which the player who is "it" calls out a category, and players can only be safe by shouting an item that fits. The cognitive demand of producing answers while running creates a dual challenge of mind and body. The exercise builds quick thinking under physical pressure.
Associatioin Chain
Association Chain is a circle exercise in which each player says a word inspired by the previous player's word, building a rapid chain of free associations. The exercise trains spontaneous, uncensored responses and reveals the connective leaps that drive improvised scene work. Speed is essential to prevent intellectual filtering.
Shuffle
Shuffle is a physical warm-up exercise in which players mill through the space and must quickly form groups of a called-out number when the facilitator gives the signal. Players who cannot find a complete group in time are eliminated or take a forfeit. The exercise builds physical energy, spatial awareness, and the habit of actively and immediately seeking connection with other players.
Activity Starter
Activity Starter is a group exercise in which one player begins a physical activity and other players gradually enter to mirror or extend it. The exercise builds ensemble attunement and physical awareness by requiring players to read and respond to a shared movement rather than a verbal cue.
Bobsledding Bodies
Bobsledding Bodies is a physical warm-up exercise in which players form a tight line and navigate the space together, shifting direction and speed as a unit. The exercise builds group awareness, physical coordination, and the ability to respond as an ensemble to subtle changes in momentum.
How to Reference This Page
The Improv Archive. (2026). Big Blob. Retrieved March 17, 2026, from https://improvarchive.org/exercises/big-blob
The Improv Archive. "Big Blob." The Improv Archive, 2026. https://improvarchive.org/exercises/big-blob.
The Improv Archive. "Big Blob." The Improv Archive, 2026, https://improvarchive.org/exercises/big-blob. Accessed March 17, 2026.
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