Use WASD to move, use the mouse to change camera movement, press space to jump, shift to go down (in water, or when flying), hold down the mouse to mine blocks, and click the mouse down to place blocks (you may need to try again if it doesn't work the first time). Press B to pick block, and press E to open the creative inventory. Press N to save the game, press L to load.
https://experiments.turbowarp.org/pointerlock/1134302309/fullscreen Turbowarp link above, Notes and Credits below: Notes: 1: This project is a "mod" of Minecraft rd versions (rd testing), the very first versions of the game. This project is not associated with Mojang, or affiliated with Mojang. There may be bugs during gameplay, feel free to report them if no one else already has. 2: There are visual glitches in certain block positions because of a texture position lighting "system". Credits: 1: 3d code is originally from Findingpepper's tutorials, and the generation sprite is from his project: Minecraft 3D. I just made adjustments to the code. 2: Textures and sounds are from Mojang 3: Music is owned by C418, it is used in this project.