Fit the Fat 2 is a unique fitness-themed game where players help an overweight character, weighing 507 lbs, get fit through various physical activities. The game challenges players to motivate their friend by engaging him in exercises like running on a treadmill, lifting weights, and jumping rope. Players must also manage his diet and ensure he gets enough rest to recover stamina. With its fun premise, the game aims to make fitness enjoyable while promoting an active lifestyle.

Additionally, Fit the Fat 2 features exercise tracking that integrates with HealthKit, allowing real-life workouts to contribute to the character's weight loss in-game. Players can customize their friend with humorous costumes and enjoy vibrant graphics that enhance gameplay. The ability to share progress and achievements adds a social element, encouraging players to stay engaged and committed to the challenge of helping their friend lose weight.