2. Grand Theft Auto: The Trilogy – The Definitive Edition (2021)
Older DirectInput parameters inside keys.dat often conflict with modern USB mice and keyboards that pool data at high polling rates (1000Hz+).
That's a great request, because keys.dat in Grand Theft Auto: Vice City is one of the more overlooked and under-documented files. Unlike later games that use .cfg or .xml , VC's keys.dat actually controls .
If you're facing this error, here is a definitive checklist to get back to exploring Vice City in style.
Never replace your original keys.dat with unknown files.
The most frequent problem players encounter is the error message: . This typically happens for two reasons:
If you are using the Nextgen Edition or the Definitive Edition , standard older trainers may not be compatible as these versions handle data differently, often using newer formats like .pak files . Are you trying to set up a specific trainer , or
: The file stores the configuration for hotkeys used to trigger various cheat features within the Ultimate Trainer.
If you plug in a modern Xbox or PlayStation controller, the native 2003 engine mapping inside keys.dat will map the buttons randomly (e.g., the triggers control the camera, or the analog sticks do not register).