Grow a GYM

Grow a GYM is a fitness-themed idle tycoon on Roblox developed by Growing Pets (verified group) where players unlock workout characters, place them on their gym plot, and earn passive Cash from their training activity. Launched in May 2025 and updated through a Lightning Update in March 2026, it has accumulated 16.8 million visits and 17.1K favorites with a 95.6% approval rating. Servers hold up to 6 players.

Workout characters are the core item - purchased from the Shop when stock refreshes, placed on the gym floor, and left to generate Cash per second. The loop runs on a 12-hour offline earnings cap, so logging in twice daily is the optimal play pattern:

• 💼 Unlock workout characters from the Shop when they restock
• 💼 Place characters on your gym's designated areas to start earning Cash per second
• 💰 Earnings accumulate offline up to a 12-hour cap - log in regularly to collect and reinvest
• 🏆 Build the ultimate fitness empire with rarer and higher-output workout champions

Cash is the sole currency. The gym grows by replacing lower-output characters with rarer, more productive ones purchased as earnings accumulate. The Lightning Update added new content and characters to the roster.

The VIP pass (259 Robux) provides enhanced gym benefits, while the Auto Collect pass (199 Robux) automates Cash collection so earnings are gathered without manual input. With only one launch code ever released, Grow a GYM focuses on its core idle loop over code-based progression.