Riffgame is an app for iPhone, iPad and Android where you play 3D games made by other people and make your own by describing them.
Type an idea like "zombie survival in a shopping mall", check the plan the app shows you (title, genre, goal, controls, camera and look), and an AI agent writes the game, tests that it loads on a phone-sized screen and publishes it. A new game usually takes 10 to 20 minutes.
Every game gets its own short link that anyone can play in a web browser, with no download and no account. You can keep improving a game by chatting ("add a boss fight", "make it night"), and every change is saved as a new version. You can remix the starter games, and Pro members can remix community games when the creator allows it. Games can be posted to Explore, where people browse by Trending, New and Top and by genre.
Games are 3D (React Three Fiber / WebGL) with an on-screen joystick and buttons, and keyboard controls on a computer. You can write your idea in any of 33 languages. Riffgame is for ages 13 and up and has no chat between users.
Pricing: free to download, no ads, and playing games is free. Making games uses riffs; new accounts get 40 free riffs, enough for one new game. Riff packs start at $4.99, and Riffgame Pro is $9.99 per week or $14.99 per month.
What it does not do: no 2D games, no online multiplayer inside games, and no web or desktop editor (games are made in the mobile app).
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