Fitness Firefight is described as 'Engage in motion-based shooter gameplay as a way of exercising. Fitness Firefight is an online multiplayer first-person shooter where you move and do squats in real life while playing against other online players' and is an app in the sport & health category. There are four alternatives to Fitness Firefight for a variety of platforms, including Android, iPhone, iPad, Apple Watch and Samsung Galaxy Store apps. The best Fitness Firefight alternative is Pokémon GO, which is free. Other great apps like Fitness Firefight are Zombies, Run!, The 4-Hour Body App and Soundmap.