💡 With examples

Secret rule ideas

Need a new rule for Green Glass Door or “I'm going on a picnic”? Here are 46 rules from the Green Glass Door app, each with examples of what gets packed and what's left behind.

How to read the examples

Green items get packed, red ones are left behind. In spelling rules, CAPITALS mark the letters that make the rule.

What makes a good secret rule?

  • Easy to judge, hard to guess. The host should know instantly; guessers should need a few rounds.
  • Misleading on the surface. The best rules look like they're about meaning but are about spelling — or the other way round.
  • Works for any item. Players can say anything, so the rule should give a clear yes or no to every word.

All 24 rules from the two free packs are below, plus a taste of every PRO pack. Jump to a pack: 🚪 Glass Door · 🧺 Categories · 🔤 Letters · 🌲 Nature · 🎭 Tricks · 🔥 Hardcore · 🧸 Kids · 👀 Here & now · 🎒 Backpack · 🧩 Wordplay · 🔗 Chain · ⏰ Time · 👻 Invisible

Glass Door

Free

Secret spelling rules: coffee in, tea out. 10 rules — all of them below.

  • Two same letters in a row

    coFFEEbaLLkiTTenteacup

    The classic Green Glass Door: coffee goes through, tea doesn't.

  • Has OO or EE

    spOOnchEEsebOOkbaLLtent
  • Ends with two same letters

    baLLglaSScoffEEkettletent
  • Same letter twice, with a gap

    TenTbAnAnAkEttlEspOOnmap

    Side by side doesn't count: spoon is a no.

  • No letter T

    coffeemapspoonTeaTenTbooTs
  • Starts with A, E, I, O or U

    AppleEggUmbrellabananatent
  • Has a J, Q, X or Z

    piZZaaXeJackettentsock
  • Ends with Y

    candYkeYbatterYcandlekettle
  • Has a W

    toWelWindoWWatchtentcup
  • 4 letters or fewer

    map (3)sock (4)tent (4)towel (5)knife (5)

Categories

Free

What things are and what they're like. 14 rules — all of them below.

  • Food or drink

    beansappleteaforkmug
  • Makes light

    flashlightcandlematchesbatteriesmirror
  • Round like a ball

    ballorangepeaplateegg
  • Soft things

    pillowmarshmallowsocksapplepot
  • Has legs

    chairdogspidersnakecar
  • Has a lid or cap

    markerjarbottlecupbowl
  • Mostly metal

    spoonkeyfrying panwooden spoonplastic fork
  • Comes from an animal

    egghoneywool sockscowcotton socks
  • Sharp or pointy

    knifeforkcactusspoonpillow
  • You can pour it

    watersandsugarrocktoothpaste
  • You eat or drink with it

    forkmugstrawapplekettle
  • Shaped like a ring

    bagelbracelethula hoopcoinball
  • See-through

    windowglasseswatermirrorplate
  • Has a handle

    mugbucketumbrellabowlplate

Letters

PRO

Rules about letters and spelling. 9 rules.

  • Starts with the first letter of your name

    Mia → mapTom → tentTom → mapKim → cup
  • Starts with the last letter of the last item said

    map → potpot → tentmap → mugrope → pot

    First item: anything. Count the last item said, even a no.

7 more rules in the app.

Nature

PRO

Woods, water and everything alive. 13 rules.

  • Comes from a tree

    paperapplematchescottonstrawberry
  • Has a shell

    snaileggwalnutslugbanana

11 more rules in the app.

Tricks

PRO

It's not what you say, it's how. 15 rules.

  • Say "please" before the item

    please, tenttent, pleasethanks, tent
  • Whisper the item

    🤫 roperope

13 more rules in the app.

Hardcore

PRO

Sneaky rules for experts. 9 rules.

  • No letter E

    mapcompassflashlightknifesleeping bag
  • Round and you can eat it

    meatballgrapetomatoballbanana

7 more rules in the app.

Kids

PRO

Simple rules for little ones. 12 rules.

  • Has wheels

    bikebusskateboardboatsled
  • Clap before the item

    👏 ballball 👏ball

10 more rules in the app.

Here & now

PRO

You and everything around you. 9 rules.

  • Something you can see now

    lamp in viewcup on tablelamp in the halla whale
  • Same color as your top

    red → cherrywhite → milkred → red cupred → milkred → snow

7 more rules in the app.

Backpack

PRO

Pockets, zippers and chargers. 9 rules.

  • Needs a battery or a plug

    flashlighthair dryerspeakercandlecompass
  • Has a zipper

    tentpencil casesleeping bagblankettowel

7 more rules in the app.

Wordplay

PRO

Hidden words, sounds and spelling tricks. 14 rules.

  • Hides a number

    tentphonemoneynetsocks
  • Hides an animal

    bowlpantstapetentleash

12 more rules in the app.

Chain

PRO

Every item hangs on the one before. 9 rules.

  • Rhymes with the last item said

    sock → clockcap → mapsock → sackcup → mug

    First item: anything. Count the last item said, even a no.

  • Bigger than the last item said

    cup → tenttent → busbus → spoontent → cup

    First item: anything. Count the last item said, even a no.

7 more rules in the app.

Time

PRO

When you use it and how long it lasts. 9 rules.

  • You use it every day

    toothbrushphonekeystentpassport
  • Gets used up

    soaptoothpastecandlespoontent

7 more rules in the app.

Invisible

PRO

Things that won't fit in a bag. 9 rules.

  • A feeling

    joyfearhomesicknesssmileparty

    Body feelings like hunger or cold count too.

  • Something money can't buy

    sunshinea hugsleepbreadticket

7 more rules in the app.

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