Vercidium 4JS — Minecraft (Open Source Multiplayer)

Vercidium 4JS

Minecraft (Open Source Multiplayer)

bank --

offline

Start

Controls: click to lock mouse • WASD move • Space jump/up • Shift crouch/down • Ctrl sprint • 1–9 / wheel select • MMB pick • LMB break • RMB place • Enter chat (online) • Tab players (online) • G fly toggle • R render quality • U HUD • I/J/K/L look (no mouse lock) • P pause • F fullscreen.

Name WS host[:port] (blank = same; can paste URL)

WS path

WS: …

Key (optional; build/admin)

Hidden by default

Seed (offline only; 0..511)

Auto-save offline builds

Auto-load offline save

Look sensitivity (9-bit) Invert Y

FOV (9-bit)

Render quality (R) HUD (U)

Auto render quality

Brightness (V) Mouse lock

Complementary shaders — reimagined (Z)

Shaders strength (9-bit)

Mouse look (no lock) (L)

Touch controls (mobile) (T)

Auto online (reconnect)

Help: H · Chat: Enter · Key (build/admin): /key

URL helpers: ?start=1 autostart, &host=127.0.0.1 ws host, &wspath=/ws ws path, &bright=1 bright, &shade=1 shaders, &shade9=384 strength, &plock=0 no-lock, &look=1 mouse-look, &touch=1 touch.

Paused

offline

Resume: P/Enter/Space · HUD: U · Render: R · Shaders: Z · Fullscreen: F · Connect: O

init…

Players

Tab

            Click canvas to lock mouse (optional)\nH help · U HUD · V bright · P pause · Q/E mine/place
          

Help

H to close

WASD move · Space jump/up · Shift crouch/down · Ctrl sprint · 1–9 / wheel select (free-look works without lock)
LMB/Q break (hold to mine) · RMB/E place (hold to build) · MMB pick · Click lock mouse (optional) · I/J/K/L look (no lock)
Enter chat / commands (/bank /pay /top) · O connect · Tab/Y players · G fly · U HUD · R render · P pause · F fullscreen
V brightness · X unstuck (safe respawn)
L mouse look (no lock)
T touch controls (mobile)
Touch: JMP/CR/BRK/PLC + FLY/WALK + SPR + SEL (cycle block) + NET + PLY + CHAT (hotbar always shown)
Touch: tap hotbar slots to select block
Offline persistence: Save/Load/Clear buttons or `/save` `/load` `/wipe` (per-seed in localStorage)
Menu/pause hotkeys (offline): J load · K save · N clear save
Key (locked/admin servers): type `/key ` in chat (stored locally); reconnect to re-auth
Online servers may support extra commands like `/motd` (client forwards unknown commands while online)
Offline: set Seed (0..511) then Apply (sets) / New (sets + starts) · Options: look sens (9-bit) + invert Y · Commands: /help /seed /sens /inv /pos /who /net /fs /menu /resume /key

MOVE

LOOK

block 2 grass tgt --

Tip: Run `python3 web_game/mc_server.py` for multiplayer (default port 9999). Offline mode still works.