OOnDevice

Free Fun & Games Online

Games and playful tools that run on your computer — text adventures, dice rolls, AI roasts, and more. Nothing uploads. Works on bad wifi or no wifi.

Playful tools for when you need a break or a random decision made for you. Roll polyhedral dice, flip a coin, spin a wheel of names, generate random numbers, run an AI text adventure, write in handwriting fonts, get roasted, play a typing speed test, or practice debates against an AI opponent. The AI-powered games use the same model as the AI Tools category, running on your computer — no cloud, no subscription needed for the free tier. The full collection is below.

Frequently asked questions

Do the AI-powered games (text adventure, debate partner, roast) send my input to a server?
No. They use the same language model as the AI Tools category, running on your computer. All processing happens in a local Web Worker. Your conversation is never transmitted.
Is the random number generator cryptographically secure?
Yes. Random Number Generator uses the Web Crypto API (crypto.getRandomValues) rather than Math.random, so outputs are suitable for passwords, lottery draws, and security-sensitive use cases.
Can I use Wheel of Names for large lists?
The wheel handles lists of up to 500 names without performance issues. Above that, the canvas animation slows down on lower-end devices — splitting into smaller groups is the practical workaround.