У вашего броузера проблема в совместимости с HTML5
The game with graphics mod.
All max, 8x AA, 16x AF (im not sure about AF worked properly)
Other control panel settings:
Texture filtering quality: High quality
The mod contains:
New particle effects
New lightning, shadow effects
New textures for guns, etc
New UI
More information and download link:
http://www.moddb.com/mods/chili-quake-xxl