Castle Quake

Quake 1 levels and gameplay, rendered and played with Castle Game Engine. LibreQuake and Quake 1 Demo assets supported.

Play in the browser Download for Windows / Linux

The browser version runs via WebAssembly and WebGL 2. Click the viewport canvas to lock mouse look. Desktop releases support loading your own custom PAKs and warp options.

Multiplayer in the browser: a desktop host started with -host start -websocket 26001 accepts browser players, who open play/?connect=wss://your-host:26001/ (the page is served over https, so the relay needs a TLS proxy in front of it).

A rocket explosion in E1M1 with its dynamic light
Grunts in E1M1 with Quake's monster AI The lightning gun beam The LibreQuake episode hub Dynamic PBR world lighting with shadow maps Demo playback of the PAK demos Deathmatch over UDP with the scoreboard

Controls

WASD or arrow keys to move & strafe, mouse look to aim, Left Click or Ctrl to fire weapon, Space to jump, E to use doors and buttons, 1–8 to switch weapons (Axe, Shotgun, Super Shotgun, Nailgun, Super Nailgun, Grenade Launcher, Rocket Launcher, Lightning Gun), F1 or C to toggle camera view (First-Person, Third-Person, Free-Fly), F2 to toggle real-time dynamic shadows, F12 for screenshot, ~ for Quake developer console, Esc for Menu and Options.

How Quake 1 maps onto Castle Game Engine

Quake 1 SystemCastle Game Engine Implementation
BSP World (v29) Direct parser builds procedural X3D scene graphs using TShapeNode, TIndexedTriangleSetNode, and TCoordinateNode with texture coordinate mapping.
Dynamic PBR & Lightstyles Quake light entities are translated to real-time TCastlePointLight instances with all 13 animated light styles (flicker, strobe, pulse) evaluated at 10 Hz, plus TCastleDirectionalLight ambient sun fill and weapon muzzle flashes.
Animated Models (MDL v6) Custom Alias .mdl parser reads skins, keyframes, and vertices, generating animated X3D meshes for weapons, pickups, and monsters.
Submodels (Doors & Lifts) Movable map brushes (func_door, func_plat, func_button) are encapsulated in dynamic TCastleTransform instances with smooth real-time kinematics and collisions.
Spatial 3D Audio OpenAL 3D sound spatialization with distance attenuation using TCastleSoundSource attached to moving submodels, triggers, and entities, plus OGG music channels.
Streaming Protocols Custom quakepak: URL protocol streams lumps directly from stacked PAK archives; quaketex: generates RGBA textures from Quake's 256-color palette on the fly.
Camera & Navigation TCastleWalkNavigation provides authentic player dimensions (40-unit eye level), step climbing (18 units), jump velocity, head bobbing, and multiple camera views.
Combat & Particles Real-time raycast hitscan detection, projectile simulation, explosion particles, blood splatters, and wall impact sparks.
Status Bar HUD Vector-rendered Quake status bar with live Armor, Health, and Ammo counters, keycards, crosshair, and level statistics.

Asset Support