MODification. Any variant of RTCW which introduces new elements to the game. There are many types of mods, client side, server side, and total conversions
A released game that is largely based on another commercial game (such as Unreal Tournament 2003) but is modified to create a different game play experience.
Modification. A variation of the original game's playing style that often uses entirely new maps, characters and objects. Almost always made available free of charge by hobbyist coders tweaking with the source code, mods are a very large part of the online gaming experience. Counter-Strike started life as a Half Life mod.
Creating a custom level or unique game from an existing game engine
Short for "modification." This is a game that is an electronic game made from the engine and assets from another game.
Modification. A mod is when an existing game has been changed - the weapons, the sounds, the players, the physics of the world, the gameplay etc. etc. TFC, Opposing Force and Counterstrike are all mods for Half-Life. The changes are not permanent; the original game can still be played
A modification that changes the game. Usually modifications are not produced by the original game manufacturer.
Short for "Modification." It's a plugin for a game that changes a few things, or even the entire game. Mods can do anything from replace weapons with new ones, change the rules of a game, or change everything about the game.
Modification to the game which changes the units, see Mods.
Mod or modification is a term generally applied to computer games, especially first-person shooters and real-time strategy games. Mods are made by the general public, and can be entirely new games in themselves. They can include new items, weapons, characters, enemies, models, modes, textures, levels, story lines and game modes.