Until now, the AI on MakePlay did all of its work before you ever pressed Start. It designed the game, wrote the code, drew the art, composed the music — and then it clocked out. Whatever it left behind was fixed: the shopkeeper had four lines, the guard had one, and by your third playthrough you had heard all of them.
That changes today. Games on MakePlay can now call an AI while you are playing them. Not a scripted branch, not a bigger dialogue tree — a language model, running live, answering things nobody wrote down in advance.
What that feels like
You type whatever you want at a character, and the reply is written right then, for you:
- An interrogation you actually conduct. Ask the suspect anything, in your own words, and watch the story bend. There is no list of approved questions, because there is no list.
- A shopkeeper who haggles. Talk her down, insult her, tell her a long sad story about your last dungeon run. She remembers what you said two lines ago.
- A puzzle that judges intent, not spelling. “Distract the guard with the cat” and “use the cat to make a noise” are the same idea, and the game can tell.
- A world written as you walk into it. The narrator describes the room you just opened — the one the creator never described, because you got there by an odd route.
And it is not only for talking. The same call can grade an answer, name the creature you just bred, turn a one-line brief into a level layout, or read what you have assembled so far and suggest where it wants to go next. Anywhere a game would rather have judgement than a lookup table, it can ask for one now.
The creator writes the character — we don't
This is the part that matters if you make games. When your game calls the AI, your game decides who the AI is. You write its character: what it knows, what it must never reveal, what mood it is in, and what shape its answers come back in.
That last one is what makes this more than a chat box bolted to a game. Your game can demand a strict reply — a decision, a mood, a change of state — and run its own logic from that. The AI isn't only producing words on screen; it can be the thing that decides whether the door opens.
MakePlay does not staple its own instructions on top of yours, does not overrule your format, and does not quietly swap your character out for a generic helpful assistant. If your detective refuses to break character, it is because you wrote her that way.
Nothing to set up
There is no API key to paste, no billing to connect, no rate-limiting code to write and no model to choose. Describe a game in the Studio and the AI crew decides whether live intelligence belongs in it — and if it does, wires it in. If you already know you want it, just say so: the ghost should answer whatever the player types.
And it is free — free for you to build with, and free for everyone who plays what you made, account or no account.
One honest caveat for creators
A live model is wonderful at improvising and unreliable at being exact. If a step in your game has one correct answer that must come out identical every single time — a score, a physics result, a save file, the combination to the safe — write that in code. Hand the AI the parts where a fresh, plausible, in-character answer is the point. Games that respect that line feel like magic; games that ask a language model to do arithmetic feel broken.
Go make one talk
Games built this way wear a small pixel AI badge on their card, so you can pick them out of the Arcade as they show up. The faster route is to make one: describe a game in one sentence at makeplay.ai and say who should be answering — the ghost replies to anything the player types. Then ask it something it could not have seen coming.