In development

A night of party games.
One phone.

GameMaster is a collection of games for parties and get-togethers. Truth or Dare, Werewolf, King’s Cup, Charades, The Impostor and more, with 4,146 hand-written prompts behind them. Put the phone in the middle of the table and pass it round. It deals, it keeps score, it settles arguments.

Free. Works offline. Android and iOS.

Truth

What’s the most ridiculous thing you’ve ever cried about?

Real cards from the app’s decks. Deal a few and the heat climbs.

How it plays

It runs the evening.

One phone on the table, passed from hand to hand. It picks the game, deals the prompts, keeps the score and knows the rules, so nobody has to be the one explaining them.

Pass and play

One phone for the whole room. Nobody else installs anything, and nobody sits out because their battery died.

It deals, you play

Prompts, turn order, scores and tie-breaks are its problem. You just answer the card in front of you.

Four intensity tiers

Dial each game up or down. The same deck plays with your parents at Christmas and your flatmates at 2am.

Works anywhere

Every game and prompt ships inside the app. No signal, no sign-up, no ads. It works the same in a cellar.

The games

Every game in the deck.

4,146 prompts across 68 packs, every one written by hand rather than generated, which is the difference between a deck that lasts a night and one that lasts a year. Every game has four intensity tiers, so the same deck works with your parents at Christmas and with your flatmates at 2am.

  1. I

    Truth or Dare

    Confession, or consequence.

  2. II

    Would You Rather

    Two doors. Neither is safe.

  3. III

    Never Have I Ever

    The innocent are always so loud.

  4. IV

    Most Likely To

    The room will decide who you are.

  5. V

    Red Flag

    Almost perfect. Almost.

  6. VI

    Spin the Bottle

    Fate, with a flourish.

  7. VII

    King’s Cup

    Thirteen rules. One unfortunate king.

  8. VIII

    Paranoia

    A whisper. A name. A coin.

  9. IX

    Charades

    Say nothing. Say everything.

  10. X

    Categories

    Name them till you falter.

  11. XI

    The Master’s Dice

    Two dice. His verdict.

  12. XII

    Hot Seat

    One guest. Every question.

  13. XIII

    The Spectrum

    Read the room. Precisely.

  14. XIV

    The Tall Tale

    One line each. No plan survives.

  15. XV

    The Impostor

    Everyone knows. Except one.

  16. XVI

    Two Truths and a Lie

    Two are real. One is not.

  17. XVII

    The Debate

    A motion. Two fools. No mercy.

  18. XVIII

    The Roast

    Affection, sharpened.

  19. XIX

    The Ticking Clock

    Name one. Pass it on. Pray.

  20. XX

    The Master’s Prophecy

    He has seen how your night ends.

  21. XXI

    Werewolf

    The village sleeps. Something does not.

  22. XXII

    Trivia

    He has all the answers. Prove you do too.

  23. XXIII

    The Better Half

    How well do you truly know them?

  24. XXIV

    The Gauntlet

    No pauses. No mercy.

The instruments

And nine tools, for when you don’t need a whole game.

Someone has to go first, the room has to split into teams, a bet has to be settled. Each one opens in a tap and does exactly one thing.

Dice

Roll one, or a handful.

The Coin

Heads, or tails.

Pick a Card

The Master turns one.

The Verdict

Ask; the Master answers.

The Number

A number, at random.

Finger of Fate

The Master points.

Divide the Room

Two sides, or more.

Running Order

Who goes when.

The Hourglass

Time, when you need it.

House rules

Set the room’s limits once.

Every group has a different tolerance, and most party-game apps ignore that entirely. These are set before you start and hold for the whole night.

The forfeit

A drink, a dare, or whatever the table invents. Refusing costs whatever you decide it costs.

The Veto

Everyone gets one free pass per evening, with no forfeit owed. Nobody has to explain why.

The House Blend

One dial, from a quiet evening to scandalous. Every deck is mixed to match it, so the heat is yours to set.

Topics off the table

Rule out exes, family, work, body or gross and they disappear from every deck for the night.

The Master’s tricks

A thumb on the scale.

Marco has fancied Sofia since March. The bottle has no idea. A trick lets whoever’s holding the phone lean on fate a little: name a guest, or name a pair, give them a share of the outcome, and let the evening find its own way there.

Spin the Bottle: the odds

  • Marco spinning 0%
  • Sofia 33%
  • Ana 33%
  • Luca 33%

Marco is spinning, so he can’t land on himself. Shares stop at 90%. You tilt the odds, you never fix the result.

Favour a guest

One name comes up more often: who the bottle picks, who gets called on, who the dare lands with.

Favour a pair

Two names find each other, both ways, whichever of them is spinning. It sleeps until one of the pair is up.

Loaded dice

The tools take odds too, not just the games: how often the coin lands heads, how often the dice hit the total you chose, which way the oracle leans. A card can be stacked to survive the shuffle, and rigged dice spread their pips about, so a roll never looks staged.

Protection

And a way not to get caught.

A trick only works while nobody has read it, so the page sits behind four digits. There is also a second four. Type those instead and the app opens a different collection entirely: plausible, dull, innocent. You keep it stocked for the moment somebody grabs the phone and demands to see what you’ve been up to.

Your four digits

Asked for every time you open your tricks. Until they’re typed, there is nothing on the screen to find.

The decoy four

A second PIN opening a second collection, one you wrote to look boring. Hand the phone over, let them scroll, take it back.

Burn it all

One command wipes every trick, the decoy collection and both PINs. No password asked for, and no undo.

The app is straight with you about it: a party trick, not a vault. Anyone who resets the app sees everything. It’s built to survive a nosy friend, not a determined one.

Screens

A look inside.

The Hall: guests seated at the table and games listed as numbered calling cards
Add your players, pick a game.
A dealt Truth card with the tier's wax-seal dot above the prompt
A dealt card. The dot marks the tier.
House Rules screen showing the forfeit, the Veto, the House Blend and topic filters
House rules, set before you start.
The Master's open hand, an ace of spades bearing the GM monogram and two dice floating above it

Early access

Get it when it lands.

GameMaster is in development and not yet on either store. Leave an address and we’ll write once, when there’s something to open.

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