Totally Reliable Delivery Service is a physics-based game that allows you to take on the role of a delivery driver in a wacky open world. In the game, you must navigate the environment to complete delivery tasks, which range from delivering packages to ferrying passengers to their destination.

The game features a cooperative multiplayer mode, which lets you team up with friends to complete deliveries together. As you progress through the game, you can unlock new vehicles, costumes, and customization options.

The physics engine in Totally Reliable Delivery Service is intentionally wacky, and you must use your skills to overcome the unpredictable nature of the game world. The game features a wide variety of obstacles to overcome, including treacherous terrain, tricky weather conditions, and a range of hazards that can make your delivery job even more challenging.

Overall, Totally Reliable Delivery Service is a fun and addictive game that offers plenty of challenge and humor. With its open world gameplay and cooperative multiplayer mode, it's a great game to play with friends and family, and its simple controls and intuitive gameplay make it easy to pick up and play.