The source is a game engine, so it contains a bunch of different components, including: a graphics engine, a physics engine, etc.

One of the features of the engine is its character animation system, in particular, facial animation, which contains many tools for creating expressive facial expressions and accurate synchronization of actors' speech with animation; the engine also features advanced gaming artificial intelligence that can effectively control opponents or allies of the player; the graphics engine was one of the first to use complex shader effects; shader water reflecting the surrounding world was actively used in games on the engine.

The physics engine is based on Chaos. It allows you to calculate many physical objects, such as solids, flexible bodies, ropes, surfaces, etc. It is possible to create realistic vehicles, from a car to a hovercraft and a helicopter. To calculate the behavior of a vehicle on the road or in the air, many parameters are used, for example, the grip of the wheels with the road, the mass of the car. To give realistic movement to the body, the physics of a "rag doll" is used; animation created in advance can be mixed with real-time physics.

With the development of the source, the following were added to it: mode and HDR rendering, dynamic lighting and shading with the ability to self-shade objects, soft shadows from objects (there is the possibility of using traditional lighting maps), multi-core rendering for multi-core processors, a developed particle system.