Mercedes Truck Driving Simulator 2021 is a free Android game developed by AnimalLifeSim2021. The game offers a realistic truck driving experience with its HD graphics, realistic physics, and three different game controllers. Players can customize their trucks to their liking with the game's excellent and detailed modification system. The game also offers thousands of tasks to complete and two different driving modes.

One of the game's unique features is its fuel system, which requires players to keep an eye on their fuel levels and refuel when necessary. Moreover, the game has a realistic AI traffic system that adds to the overall experience. Players can also customize their license plates, racer names, and choose from a variety of realistic truck sounds.

Mercedes Truck Driving Simulator 2021 is a promising game that provides limitless customization options for truck enthusiasts. However, it's worth noting that the trucks in the game are replicas, and the game has no association with Mercedes.