XashXT Features

• Full compatibility with the original Half-Life entity set
• Support for forming complex hierarchies of entities (Parent System)
• Mirrors that can skip reflection of any specified object or, conversely, show ordinarily invisible objects
• Surveillance monitors (colour and monochrome)
• Portals that can take you from one point to another (as in Portal, but more basic)
• Weather effects (rain and snow)
• A powerful particle system with a standalone visual editor
• A system of prefixes for making complex scripted scenes
• An extended decal projection system that works on both level geometry and characters (players and NPCs)
• Realistic lasers that can be reflected off mirror surfaces (used in gameplay)
• A large set of logical entities for implementing any conditions in scripted scenes or complex arrangements
• A camera with flexible settings for cutscenes, letting you switch to any character's point of view (including inanimate ones)
• Configuration options for setting the attitude of any NPC towards others and towards the player
• Dynamic coloured lighting that can project and play an animated texture as a light source
• Playback of AVI files on level polygons and brush objects
• A 3D skybox for simulating expansive areas
• Bloom effects
• Supports for HD textures (up to 4096x4096)
• Background maps in the game menu (as in Source)
• Support for large game levels (32768x32768x32768 units)
• Shadow maps for dynamic shadows
• More believable lighting
• Realistic rigid body physics powered by a third-party engine (PhysX)
• Realistic water
• Dynamic day and night cycles