GTA 3 Side Missions Guide
In this section you find the complete list and guide to all the Side Missions in Grand Theft Auto III, as well as the GTA 3 Definitive Edition.
These include the classic vehicles-based Sub-Missions (such as Vigilante, Firefighter, Paramedic and Taxi Driver), 4 RC Toyz Missions, 4 Off-Road Challenges, and other extra activities in GTA 3.
While Side Missions are required for 100% completion of the game, they're not required for story progression, so they could be played at any time, even after the main GTA 3 storyline is completed.
However, it is strongly advised to complete these missions as soon as possible on each island. The more you progress through the story, the more gangs will become hostile to you, which will make it a lot harder to complete these tasks.
Vehicles Sub-Missions
Off-Road Challenges
Other Side Missions & Activities
Pay Phone Missions
GTA 3 also features 17 Pay Phone missions that are considered "optional story missions".
These are assignments given by various characters via certain Pay Phones across Liberty City.
For a list of all the Phone Missions, see our GTA 3 Story Missions List & Guide.