V-Rally

Run the game with "aquabug" switch to enable debug 
options (i.e. vrvoodoo.exe aquabug).

Now you have the following cheat keys:

S             - Toggle Text Shadows
P / L         - Increase / Decrease Text Shadow Grey
O / K         - Increase / Decrease Text Shadow Alpha
I / J         - Increase / Decrease Bitmap Shadow Gradient
U / H         - Increase / Decrease Bitmap Shadow Offset
Y / G         - Increase / Decrease Bitmap Shadow Alpha
C             - Toggle Level Cheat Mode
Ins / Del     - Change Current Class
Home / End    - Change Current Level (only for Class 4)
PgUp / PgDown - Change Current Stage
F8            - Toggle Narrow Stage
D             - Toggle Debug Options