The short version: melt one candy bar into each of eight clean newborn diapers, number them, pass the tray, and every guest writes a guess against each number. Most correct wins. The part nobody publishes is the part that decides whether it lands: melting destroys the shape and the wrapper, so the only thing left to identify a bar by is whatever is suspended inside it. Choose eight smooth chocolate bars and you have handed your guests eight identical brown smears and a pen.
Fair warning: our guide to games that actually get laughs files this one under “approach carefully,” and that is still our default. But it is the most-searched shower game there is, so if you are running it, run it properly — starting with one thing.
Ask the guest of honour privately, before you buy anything. This game divides rooms harder than any other. A yes means you run it with confidence; a no means you run the pun version with no diapers instead and never mention it again. Asking is a thirty-second message and it is the whole difference between a funny round and a regretted one.
How it works, start to finish
- Buy eight bars and a pack of newborn-size diapers. Newborn is right — bigger sizes read as too much.
- Number the diapers on the outside flap with a Sharpie before anything goes in them.
- Melt one bar at a time. Chop it, microwave in ten-second bursts, stir between each burst, and stop the moment it is smooth. Overheated chocolate seizes into a grainy paste and hides the very texture the game runs on.
- Smear one bar into one diaper with a plastic spoon, then write the answer next to that number on your phone before you touch the next bar. This is the step hosts skip and then regret.
- Chill the tray, covered. Cold chocolate holds its shape but smells less, so bring it out fifteen minutes early.
- Pass the tray seated, one diaper at a time, and say out loud that the diapers are clean and the mess is chocolate. Give everyone an explicit opt-out.
The candy list: what actually survives the melt
We read the manufacturers’ own published ingredient statements for twelve bars a variety pack typically contains, and sorted them by what is left to recognise once the bar is liquid. Difficulty is the column to plan around: a good round wants a spread.
| Candy bar | What survives melting | Difficulty | Allergens on the label |
|---|---|---|---|
| PayDay | Peanuts are the first ingredient and the classic bar has no chocolate coating — it melts pale tan, not brown. | Easiest | Milk, peanuts |
| Almond Joy | Shredded coconut and whole almonds, both intact and both visible. | Easy | Coconut, milk, soy, almonds |
| Snickers | Peanut halves suspended in caramel. | Easy | Peanuts, milk, soy, egg whites |
| Reese’s Cups | Thick and matte rather than glossy, streaked two-tone; the peanut-butter smell carries across the room. | Easy | Milk, peanuts, soy |
| Mounds | Coconut threads in a darker, less milky chocolate — and no nut. | Easy | Milk, coconut, soy |
| Heath | Buttery toffee shards that stay crunchy in the warm chocolate. | Medium | Milk, soy, almonds |
| Whoppers | A chalky malt crumb, and an unmistakable malted-milk smell. | Medium | Milk, soy, wheat |
| Kit Kat | Dry, pale, biscuit-coloured wafer grit. | Medium | Milk, soy, wheat |
| Twix | Shortbread crumb plus one stringy caramel ribbon. | Medium | Wheat, milk, soy |
| Milky Way | Smooth, with a single caramel ribbon through it. | Hard | Milk, soy, egg whites, barley |
| 3 Musketeers | Nothing. Whipped nougat and chocolate, no inclusions at all. | Hardest | Milk, soy, egg whites |
| Hershey’s Milk Chocolate | Nothing — this is the control sample, and it is fine to include exactly one. | Hardest | Milk, soy |
Pick one from each family, not eight from one
The single decision that makes or breaks the round. Eight bars, drawn like this:
- Nut and peanut butter — PayDay, Snickers, Reese’s → take two
- Coconut — Almond Joy, Mounds → take one (both at once is a coin flip, not a question)
- Wafer, biscuit and malt — Kit Kat, Twix, Whoppers → take two
- Toffee — Heath → take one
- Smooth, no inclusions — Milky Way, 3 Musketeers, Hershey’s → take one, and only one
That last line is the rule worth remembering. Every bar in the smooth family melts into the same anonymous brown, so a second one is not a harder question — it is an unanswerable one, and two guests will tie on a guess.
Two allergens hosts never see coming. Heath is a toffee bar with no visible nuts, and Hershey declares almonds on it. And the nougat bars — Snickers, Milky Way, 3 Musketeers — all list egg whites, so a guest with an egg allergy should not be tasting anything. Recipes also differ between full-size, fun-size and seasonal shapes, so read the wrapper of the bar you actually bought and write the allergens on your key beside the number.
The answer key and score sheet
Fill column two on your own copy as you melt. Screenshot or print the blank version, one per guest.
| Diaper # | Candy bar (host’s key) | Guest’s guess | Correct? |
|---|---|---|---|
| 1 | |||
| 2 | |||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 | |||
| 7 | |||
| 8 |
Reveal one number at a time and let guests mark their own sheets. On a tie, the tiebreaker is whoever got your smooth-family bar right. Hand the prize over and get the tray out of sight before the next game.
🍫Same candy bars, no melting and no tray: our Candy Bar Baby Match round puts a pregnancy term on screen and the room shouts the bar it puns on — twins for Twix, contractions for Whoppers.See Candy Bar Baby Match →Three versions worth knowing
- Look and smell only. Say up front that nobody tastes anything. Texture and smell carry the round anyway, and it removes the objection most guests actually have.
- Virtual. The diapers cannot travel, so hold each one to the camera under good light and take answers in chat — alongside a round built for a screen, from games that survive Zoom.
- Thirty guests. One tray around thirty people takes half an hour and kills the room. Build two identical trays and score per table — the fix behind most large-group shower games.
FAQ
How many diapers do you need?
Eight. Six feels thin once guests spot the easy ones, and ten pushes a passed tray past ten minutes — where one game starts eating the running order.
Can you use fun-size or mini bars?
Yes — one mini per diaper is plenty, and a variety bag is the cheapest way to get eight different bars. Read the wrapper rather than assuming: minis and seasonal shapes are not always the full-size recipe, and the recipe is what this game tests.
What if someone has a nut allergy?
Run the look-and-smell version, keep the wrappers out so anyone can read the labels, and say the allergens aloud with each reveal. No spoons. Five of the twelve bars above declare peanuts or almonds and three declare egg whites — nobody should have to ask what is in a numbered diaper.
Sources
- Ingredient and allergen statements, Hershey’s product pages: PayDay, Almond Joy, Mounds, Reese’s Cups, Heath, Kit Kat, Whoppers, Hershey’s Milk Chocolate.
- Snickers, Twix, Milky Way and 3 Musketeers: ingredient statements filed as label data by Mars Chocolate North America (2017–2023) in the USDA FoodData Central branded-foods database. The individual records are client-rendered rather than linkable, so look up FDC IDs 2087733 (Snickers Minis), 2088563 (Twix Minis), 2564536 (Milky Way Fun Size) and 2499124 (3 Musketeers) from that search.