Monster Truck Water Surfing 3D is a free-action game with an adventurous storyline. It's based on a realistic 3D model of a beach environment with water, and a huge amount of detail. You can transform your vehicle from a truck into a water surfing boat, and drive along the beach. There are various levels to explore, and you can drive through the surf, pass obstacles, and perform stunts. There are various missions to complete, with different difficulty levels. It's up to you to choose the best vehicle to complete the mission.

The controls of the vehicle are simple, you can drive either with the steering wheel or with the arrow keys. The way you control the boat is the same as the way you control the vehicle. 

Your mission is to drive along the beach and complete various missions. There are various obstacles to overcome. You have to get through them to reach your goal. Your goal is to collect all the coins. You can collect them by driving through the surf, jumping over obstacles, and passing through the checkpoints.