Key Combos are as Follows
Tab + 1 – All Weapons
Tab + 2 – Extra Money
Tab + 3 – Full Health
Tab + 4 – Higher Wanted Level
Tab + 5 – Lower Wanted Level
GTA3: PC Ultimate Trainer (English) Free Download
Tab + 6 – Tank
Tab + 7 – Destroy All Cars
Tab + 8 – Change Costume
Tab + 9 – Crazy Pedestrians
Tab + 0 – All Pedestrians Attack You
Tab + q – Peds Fight Each Other
Tab + w – Time Advances Quicker
Tab + e – Very Fast Game Clock
Tab + r – 100% Armor
Tab + t – Mad Werather
Tab + y – Clear Weather
Tab + u – Cloudy Weather
Tab + i – Rainy Weather
Tab + o – Foggy Weather
Tab + p – Invisible Cars
Tab + a – Flying Car
Tab + s – Improved Car Handling
Tab + d – Gore Mode
Tab + g – Un / Freeze Mission Timer
Tab + h – Inf Health
Tab + j – Inf Ammo
Tab + k – No police
You might want to print a copy of all that out
Copy the trainer into your GTA3 folder for the start gta3 button to work.