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BlockHaven Sandbox (plain WebGL2)

BlockHaven Sandbox (plain WebGL2) is a published WebGL2 prompt by @kepochnik. It has source credit and no verified 3dmotion rebuild.

by @kepochnik on X · 2026-09-25

Creator promptWebGL2Interaction: Pointer

Result by @kepochnik

Original post

Original prompt: @kepochnik · X
Rebuild status: No verified 3dmotion rebuild.
Open demo: No live demo linked here.

Prompt by @kepochnik. Copies include source credit.

Original prompt

Free · 2,693 characters

Yes bro here you go: Build a browser sandbox game in the spirit of Minecraft that feels as close to the original as possible. All in-game text in English. Controls: keyboard and mouse (desktop). TECH - A single HTML file, plain WebGL2, no…

Yes bro

here you go:

Build a browser sandbox game in the spirit of Minecraft that feels as close to the original as possible. All in-game text in English. Controls: keyboard and mouse (desktop).

TECH
- A single HTML file, plain WebGL2, no third-party libraries.
- All 16×16 textures generated in code as pixel art (stone, dirt, grass, planks, leaves, ores, glass, water, lava, etc.).
- Sounds synthesized with WebAudio: digging, footsteps, placing blocks, damage, mobs, explosions, calm background music.

WORLD
- Infinite world made of 16×16×128 chunks, with a seed.
- Biomes: plains, forest, birch forest, taiga, snowy tundra, desert, mountains, oceans, beaches.
- Caves (winding tunnels and large caverns), lava at the lower levels, ores by depth: coal, iron, gold, diamonds.
- Three tree types, tall grass, flowers, cacti, sugar cane, pumpkins.
- Minecraft-style lighting: sky light and block light (torches, glowstone, lava) that spreads cell by cell, with smooth lighting and ambient occlusion.
- Day/night cycle: sun, moon, stars, sunsets, 3D clouds, distance fog, rain.
- Water and lava flow by levels; two sources make infinite water; water + lava make obsidian or cobblestone. Sand and gravel fall.

PLAYER
- First person, collisions, jumping, sprinting, sneaking (doesn't fall off edges), swimming, ladders, fall damage.
- Block breaking with crack stages and particles; break time depends on the tool.
- Visible hand and held item with a swing animation. Third-person view on F5.

SURVIVAL
- Health, hunger, saturation, air underwater.
- Tools in 5 materials with durability, armor in 4 materials.
- Inventory with 2×2 crafting, 3×3 crafting table, furnace with fuel, chests, bed (skip the night and set spawn).
- Item drops, death and respawn.
- Mobs: pigs, cows, sheep, chickens (breeding, shearing); at night zombies, skeletons with bows, spiders. Zombies and skeletons burn in sunlight.
- Farming: hoe, seeds, wheat growth, bread. Doors, fences, fence gates, TNT.

CREATIVE
- Flying on double-tap Space, instant block breaking, a catalog of all blocks with tabs and search.

UI
- Title screen with a world panorama, world list (create / delete / play), options (FOV, render distance, sensitivity, sound, brightness, GUI scale).
- Pause menu, death screen, HUD (hotbar, hearts, hunger, armor, air bubbles), F3 debug screen.
- Chat with commands: /gamemode, /time, /give, /tp, /summon, /weather.
- Worlds saved in localStorage.

RESTRICTIONS
- Do not use Minecraft's name, logo, textures or characters (Steve, Creeper, etc.): give the game its own name and design your own mobs.

TESTING
- Run the game in a headless browser, check every system and fix bugs before delivering.

Prompt by @kepochnik, posted on X on 2026-09-25. x.com/kepochnik/status/2103510886727942559. Copies include this credit.

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BlockHaven Sandbox (plain WebGL2)@kepochnik · 3D browser games

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Source & credit

Author: @kepochnik
Original post: x.com/kepochnik/status/2103510886727942559
Posted: 2026-09-25
Fetched: 2026-11-08
Licence: Credited link: Shared publicly by the author; full text with credit, removed on request
Evidence: Prompt shared publicly by @kepochnik; shown with credit and a link back
Machine-readable: e/blockhaven-sandbox-plain-webgl2.md · index.json

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BlockHaven Sandbox (plain WebGL2)

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Source & credit