The term partial conversion is sometimes used in computer games to describe a type of mod (short for "modification") that changes only part of the underlying game. Many computer games allow their players to edit how certain functions of the game works, such as weapons, sounds, enemy behaviour and levels. Editing some of these elements while leaving the better part of the original game intact is usually referred to as a partial conversion.

An example would be changing a conventional deathmatch game to behave like a capture the flag game. This could include new levels that provide reasonably even sides, new 3D models for the flag and editing of game code to understand how the flag is supposed to work.

A modification in which the final product bears little resemblance to the original is known as a total conversion.