I started this after noticing how unequal access to coding education was in my community.
Some kids had every resource imaginable; others had never touched a computer.
I wanted to build something free, browser-based, and unique that anyone could use to learn how to code without needing an account, a subscription, or a powerful computer.
Claude Code helped me build it.
I handled the design direction and content.
Claude wrote most of the implementation.
What is it Forge Code is a coding challenge game that runs entirely in your browser.
You write a solve(text) function, hit run, and it checks your answer against the expected output.
JavaScript runs natively in a Web Worker.
Python loads via Pyodide.
Nothing is sent to a server.
No login required.
Two tracks The site is split into two completely separate paths.
The Academy is for beginners.
There are 24 challenges, and every single one is preceded by a lesson.
It is designed for people who have never written a line of code.
The Gauntlet is for people who want a real fight.
It is a story campaign across five acts, starting at medium difficulty and escalating to genuinely brutal algorithmic puzzles.
Every hard challenge generates a unique input per player using a seeded RNG, so your numbers are different from everyone else's.
You cannot just copy someone's answer. ** How the puzzle system works** This was the part I was most excited to build.
For harder challenges, instead of everyone getting the same input, the system seeds a random number generator with your player ID and the challenge ID.
That seed deterministically generates your puzzle input and the correct answer.
If you try it, I would genuinely love feedback such as which challenges felt too easy or too hard, and whether the Academy lessons actually taught you anything.
Have fun coding! https://forgecode.org