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ROBLOX GAME DETAILS
Underground Mansion Tycoon
By Allergic To Flops
🏡 Build your dream mansion on the surface, then hit DIG DEEPER to unlock a secret world beneath it 🚗 Show off your spinning supercar in the hidden basement garage, and chill in the sunken pit lounge and bar 🌊 Swim in your own underground lagoon, relax in the cave spa, and punch the bag in the rock gym 💰 Open the giant vault door to your gold vault, hypercar gallery and private nightclub 🦈 Ride the glass elevator down to the aquarium, the glowing crystal mine, the T-rex fossil vault and the molten lava core 🏰 Pick your style: Modern, Royal Palace, Gothic Manor or Sci-Fi Lair. Visit your friends' mansions too! 🔍 Build it tile by tile (don't fall through!) and unlock every room hidden underground
Playing now93
Total visits188.6K
Favorites1.7K
Max server4
ABOUT THIS EXPERIENCE
About Underground Mansion Tycoon
🏡 Build your dream mansion on the surface, then hit DIG DEEPER to unlock a secret world beneath it 🚗 Show off your spinning supercar in the hidden basement garage, and chill in the sunken pit lounge and bar 🌊 Swim in your own underground lagoon, relax in the cave spa, and punch the bag in the rock gym 💰 Open the giant vault door to your gold vault, hypercar gallery and private nightclub 🦈 Ride the glass elevator down to the aquarium, the glowing crystal mine, the T-rex fossil vault and the molten lava core 🏰 Pick your style: Modern, Royal Palace, Gothic Manor or Sci-Fi Lair. Visit your friends' mansions too! 🔍 Build it tile by tile (don't fall through!) and unlock every room hidden underground
CreatorAllergic To FlopsGenreAllCreatedOct 4, 2026Last updatedOct 31, 2026
Player activity, visits and other stats can change as Roblox updates its data. MADGAMES refreshes these details periodically rather than storing a permanent snapshot.
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Underground Mansion Tycoon FAQ
Where can I play Underground Mansion Tycoon?
Use the official Roblox play link on this page. The experience runs on Roblox; MADGAMES does not host or copy the Roblox game files.
Is Underground Mansion Tycoon active right now?
The player count shown on this page comes from Roblox data and can change throughout the day.
Who made Underground Mansion Tycoon?
Roblox lists Allergic To Flops as the creator of this experience.
Roblox and the individual experiences listed here are owned and operated by Roblox and their respective creators. MADGAMES is an independent discovery site and is not Roblox.