Board Game RNG

Random number generator for board games using Svelte + SvelteKit

Summary • Features • Examples • Development • Credits • License

Summary

Helps you pick starting cards for board games

• Lots of games have decks of cards that you draw from only once at the start of the game
• These decks might only have a handful of cards, which makes them hard to shuffle
• Oftentimes, they just get a quick and dirty shuffle to avoid the hassle
• Most of the cards get returned to the box, so most of that shuffling goes to waste

Avoid the shuffling and pick some random cards instead

e.g. If you need 5 starting cards from a deck of 25 possible ones:

• Generate 5 random numbers from 1 to 25 (without duplicates)
  • Let's say you get 3, 4, 11, 12, and 17
• Pick out the 3rd, 4th, 11th, 12th, and 17th cards from the deck and you're set

Features

• Mobile-first design with number-picker wheels and simple toggles
• Progressive web app (PWA) support for adding to home screen
• Query params for bookmarking custom initial values

Examples

With default initial values

[!NOTE] Defaults to generating 2 numbers from 1 to 6 without duplicates

ckant.com/board-game-rng

With custom initial values

[!NOTE] Custom initial values can be set for quantity, from, to, and duplicates

[!TIP] Save a bookmark for one-click generation in the future

ckant.com/board-game-rng?quantity=5&from=5&to=20&duplicates

Development

Install dependencies

npm install

Start dev server

npm run dev -- --open

Make changes

See Svelte and SvelteKit docs

Build

npm run build

Preview (production)

npm run preview -- --open

Credits

• React Wheel Picker for the great picker wheels (ported to svelte)
• pure-rand for the (unbiased) uniform int distribution
• Svelte for the fun web framework

License

Copyright © 2025 Chris Kant.
This project is MIT licensed.