Marshmallow tower challenge

Give every team the same kit

This guide hosts 4–12 people, including the host, in two or three teams. For 4–8 people, make two teams as equal as possible; for 9–12, make three. Every team has 2–4 people. Five people split 2 and 3; nine split 3, 3 and 3; eleven split 3, 4 and 4. These are house hosting choices, not a maximum in the original challenge.

For each team count 20 straight, uncooked spaghetti sticks from the same packet, measure one yard (36 inches / 91.44 cm) of ordinary masking tape and one yard of string, and supply one fresh standard-size marshmallow. Use the same spaghetti brand and thickness, tape width, string and marshmallow size for everyone. Avoid mini or jumbo marshmallows and unusually thin pasta. Two teams need 40 spaghetti sticks, two yards each of tape and string, and two marshmallows; three teams need 60 sticks, three yards each, and three marshmallows.

Give each team one pair of household scissors for cutting string and tape. Scissors are tools, never tower parts. Park each measured tape strip on its table edge for easy peeling; do not hand out a whole roll. Containers are optional for distributing kits and cannot become building material. Check kits and replace any already-broken spaghetti before starting. Once the clock starts, no replacement supplies, borrowing or trades.

Provide a level, stable tabletop work area and comfortable seats for each team, with enough clear space and headroom for its tower. Separate tables are preferable; a large shared table works only if teams have distinct areas and can avoid bumping each other. Set out one shared measuring tape long enough for the towers and one shared 18-minute timer. A mechanical kitchen timer works; a phone timer is optional. Choose the judging order now. The host may build while keeping the timer audible and giving time calls; each team chooses a spokesperson, and another team's spokesperson witnesses its measurement. No extra non-playing host or judge is required. Say the two or three agreed scores aloud; optional paper and a pen can help remember them.

Agree on what counts as a tower

Only the supplied spaghetti, tape, string and marshmallow may become part of a tower. Use as much or as little as you want. Break spaghetti into shorter pieces and cut tape or string as needed. For a clear house boundary, cut string to length but do not unravel it into extra strands. Keep the marshmallow whole: no cutting, tearing pieces off or eating it. You may gently push spaghetti into it for attachment, but must leave it as one complete marshmallow at the highest point.

In this guide, you may use your kit's tape to secure the base or string ends to your own flat tabletop. That explicit house permission resolves a common disagreement about the word freestanding. The table may support the base, but nothing else may support or suspend the tower: no hands at the finish, chair backs, walls, ceiling, clothing, containers, scissors or measuring tools. Do not run string over an overhead fixture. For a version with no table attachments, choose the Lift-off tower twist before play.

Let each teammate propose one idea, then start a small structure rather than spending the whole round discussing a perfect design. Try a broad base and bracing, put the actual marshmallow on top, then briefly let go while the clock runs. If it bends or falls, rebuild with the same kit and test again. These are optional design tips, not a required shape or a promised winning method. Holding, adjusting and testing are allowed during construction; outside design lookup is excluded from this house round.

Build, release, measure

Keep the challenge fair and friendly

Before the start, ask someone to explain back what goes on top, when hands come off, and whether tape may touch the table. Clear up those three questions now. Spaghetti thickness, marshmallow size and tape allowances can change the task, so matching kits matter more than a claimed record height. A snapped strand stays part of that team's allowance; do not quietly hand it a fresh one mid-round.

Correct a construction mistake while time remains. At the cutoff, use the announced limits rather than granting extra seconds to a struggling team. If teammates disagree about a height, re-read the tape together while the tower remains untouched and standing. An uncertain touch or support claim should be settled from what the host and witnesses actually saw; do not invent a penalty after the fact.

Protect tables from bumps and drafts during judging. For a clearly witnessed outside disturbance, such as someone knocking a table, stop judging and void the round if a fair comparison can no longer be made; do not award an imagined height or give only the affected team extra build time. If everyone wants to replay, provide full fresh matching kits and another complete 18-minute round for all teams. Ordinary buckling or a team's own handling mistake is not an outside disturbance. Judging order, rounding, shared ties, no-unravelling, lookup limits and these remedies are house choices.

Offer roles such as joining, testing, suggesting braces and watching the clock, then share the hands-on work. Use conversation at a normal quiet level rather than shouted rivalry. Keep sharp spaghetti ends away from faces, cut on the work surface and do not eat the construction marshmallow. Check whether the food materials suit the group before preparing kits; changing pasta or the top load changes the challenge, so agree matching replacements as a separate house version rather than treating scores as comparable. Seated play still requires close visual inspection and hand work; it is not a blanket accessibility guarantee.

Already know the game?

Ideas & Twists

Choose a variation together before you start.