The file serves as the database for the menu in the game settings. It records which physical key or button index is assigned to specific game actions (like "Fire," "Sprint," or "Enter Vehicle").
For players using the Ultimate Trainer, managing this file is straightforward: gta vice city keys.dat
When you launch the game, it checks for the presence of the keys.dat file and verifies its contents. If the file is missing or doesn't match the expected data, the game may not run or may display an error message. This mechanism was designed to prevent users from playing pirated copies of the game. The file serves as the database for the
directory (usually within your Documents folder) that stores your custom control configurations. GTAMods Wiki Essential Key Mapping Features Redefine Restricted Keys gta vice city keys.dat