Demo: https://minecraft-freecodecamp.vercel.app/
Currently it has 5 types of blocks: Grass, Wood, Log, Glass and Dirt. You switch blocks with numbers 1-5 on your keyboard. You navigate the world with the mouse and WASD. You can click to add blocks and Alt+Click to remove blocks. You world is stored in your browsers local storage.
In the project directory, you can run:
Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.
Credits to Daniel Bark and free code camp.