The original PC version of Vice City was built for older "DirectInput" controllers, whereas modern controllers (like Xbox or PlayStation pads) use "XInput." Because of this, trying to map modern controllers directly into keys.dat via the in-game menu often results in broken mappings or non-responsive triggers.
If you plug in a modern gamepad (like an Xbox or PlayStation controller), Vice City might misread the inputs, mapping the camera or acceleration to random axes. keys.dat gta vc
Go to your GTA Vice City User Files folder. Right-click keys.dat (or the folder itself), select Properties , uncheck Read-only , and click Apply . The original PC version of Vice City was