Fg-optional-multiplayer-build.bin

If you only intend to play the story mode or campaign, you do not need this file.

As the installer loads, you will see a component selection screen. Look for a checkbox labeled something like: fg-optional-multiplayer-build.bin

It is also worth noting that "FG" is a common abbreviation for the open-source flight simulator . While FlightGear primarily uses XML configuration files and standard game assets rather than monolithic .bin files for its multiplayer components, its development forums are filled with technical discussions about multiplayer properties and builds. However, no direct mention of an fg-optional-multiplayer-build.bin file appears in the official FlightGear documentation, making FitGirl the more likely source. If you only intend to play the story

Choose where to install the game (e.g., D:\Games\CODModernWarfare ). While FlightGear primarily uses XML configuration files and

| Component | Meaning | |-----------|---------| | fg | Likely a project or engine codename (e.g., "Frozen Guardians," "Flag Game," or an internal studio shorthand). | | optional | The asset is not required for single-player or baseline execution. | | multiplayer | Contains networking logic, maps, synchronization data, or UI elements specific to online/local multiplayer. | | build | Compiled or pre-processed output from the game’s asset pipeline, not a source file. | | .bin | Binary format — opaque to text editors, structured for fast loading. |

: Absolute structural files required for the basic version of the game to work.

If you have downloaded a recent AAA game from a scene group or a repacker, you might have stared at this file wondering: Do I need this? Can I delete it? Why is it taking up 15 GB of my SSD?