TURBOWARP LINK: https://experiments.turbowarp.org/pointerlock/1125922810/ It's Minecraft. It uses raycasting to render. Worlds are infinite, including vertically. WASD to move, space to jump, shift to go down (where applicable). Click to place, hold mouse to break. Up/down arrows or numbers to scroll though hotbar.
credits: @findingpepper3 for tutorial