How Teleplay turns one sentence into a play-tested game

Everything starts with one sentence. “A fox collecting acorns on floating islands while dodging crows” is enough. You don't pick a genre from a menu or fill in a form. The idea is the input.

Before anything is built, Teleplay turns your sentence into a brief: a short plan of the game. It says what the game is, how it's won and lost, what's in it and how it looks, and it names the bonus move the engine picks, if there is one. You read it before pressing Create, so you know what you're getting before a single tile is placed.

This is the part that makes Teleplay different. The AI never writes code. Instead, it builds the game by calling the engine's tools, one decision at a time: define a player, place an enemy, set how the game ends.

Each tool is backed by the engine's own implementation, written and tested once, then reused by every game. What the AI produces is data, a description of the game. Nothing model-written runs as code on the server or in your browser.

That matters for two reasons:

• Safety. No model-written code runs.
• Reliability. The AI combines building blocks that are written and tested once, instead of improvising new code that nobody has checked.

The engine takes that description and assembles the game: the world, the characters, the rules and how it ends.

Art is picked or made for your idea. The engine looks through its library of earlier drawings first and draws new art when nothing fits.

Sound is built in: sound effects, music that fits the game's mood, and ambient layers. Borrowed sounds come from open-licensed collections, and each game's credits file lists every one it uses.

The result is a 2D game that runs in the browser.

Before anyone else sees the game, a bot plays it. A headless browser plays it through and checks it against the rules the game itself declared:

• Can the ending be reached?
• Do the controls move the player?
• Does the score on screen match the game?

Anything that fails goes through an automatic repair pass. A game that still fails after repair isn't shown to other players; only its maker can open it.

The game gets its own page. That page lists how to play: the controls, the goal and what's in the game.

If you made the game, you can change it: describe the change in a sentence in the studio chat. Teleplay rebuilds the game and checks it again before the change goes live, and Undo takes it back to how it played before.

Anyone can also retune a running game. Its settings appear beside it: speeds, health, damage, colours. Move a slider, press Reload, and the game restarts with your new numbers. Those changes stay in your browser tab, and nobody else sees them.

Teleplay doesn't fill in genre templates. It combines mechanics to fit the idea: moves like double jump, dash and wall jump; enemies, bosses and waves; collectibles and hazards; cards, crops, crafting and more. That's why the same engine can make platformers, top-down action games, tower defence, puzzles, deckbuilders, racing and rhythm games, farming and life sims, and idle games.

• 2D only. Every game is a 2D game.
• Single-player. There's no multiplayer.
• Keyboard and mouse. Phones and tablets aren't supported yet.
• On Teleplay only. There's no download or export: games are played on Teleplay, in the browser.