Features
Availability of 16-bit color palette.
Support for 3DFX mode at the hardware level.
Hierarchical Models with interpolated skeletal animation.
Translucent (water mist), and transparency of texture mapping.
Programmable interface of C + + DLL to create modifications, addons.
Improved character AI, including NPCs.
Realistic environment.
A wide choice of weapons.
Based on the results of actions - the passage of a player SiN was not completely linear. In many levels there are different ways to the successful completion of missions, and they could affect future results. This feature is added, and the reality of the game forced the player to think before every action.
The high level of interactivity - SiN showed one of the highest levels of interactivity in the 3D-shooter at the time of the game. Since a large part of game models can interact, computer terminals are managed with the help of DOS-like operating system, environment objects (tables, computers, miscellaneous equipment, etc.) are available for destruction. For example, at the Freeport City Bank, you can hack a server bank, get a bank account archenemy and transfer all his money on the personal account of a game character.
Controllable vehicles - although they did not play a big role in the game, but at some level were needed for further passage. During the management of type player remains from the first-person.
Easter Eggs - SiN contains a lot of so-called "Easter eggs" or secrets. These secrets are diverse: from the rather obvious signs (cracks), and inscriptions on the walls, and various secret rooms.