In 'Muscle Madness: Father-Son Gains', you play as YEXPZN, a gigantic, hulking father with dreams of being an idol to your adoring son. Little do you know, your son has a plan to turn you into the ultimate muscle god by secretly doping your food with his experimental muscle growth serum. Experience comedic challenges as you deal with sudden bursts of strength, ridiculous public appearances, and over-the-top fitness dramas—all while navigating your son's genius but misguided intentions. As your physique skyrockets, so does the chaos around you, leading to unexpected confrontations and hilariously outlandish scenarios in your quest for family bonding.