: Are you asking about the existing updated features included in the 2014 Remastered Edition compared to the 1990 original, such as the orchestral soundtrack , HD graphics , or voice acting ?
: Are you looking for information on how the original developers (Cinemaware) built specific features for the game (like the mission builder or dynamic super resolution ), or are you asking how you might develop a new feature for the game yourself?
The query about and developing a "feature" can be interpreted in a few different ways. To provide the most helpful response, could you please clarify which of the following you are interested in?