Notes about the NPC file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The NPC file type is primarily associated with 'Jagged Alliance 2' by Sir-tech Canada Ltd.. NPC files control the behaviour of NPC's (Non-Player Characters), for example how to respond to interaction. The NPC File Editor allows you to load a .NPC file and make alterations to the parameters within.