🏡 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
Open to everyone
View activity details →
Original publication date
As reported by Roblox
Thumbnail, name, description, and access-price changes only.
No competitor-level changes tracked yet — SpawnRadar logs every thumbnail, name, price, and description change as it happens.
This is the live badge that the code will show on your site.
<iframe src="https://www.spawnradar.com/widget/10769302779" width="320" height="140" frameborder="0" title="SpawnRadar live players" loading="lazy"></iframe>Get an alert the moment Underground Mansion Tycoon changes its thumbnail, price, name, or ships an update — so you never get blindsided by a competitor. Revenue figures are transparent estimates; see our methodology.
Start tracking freePublic Roblox data, sampled on a separate schedule. Prices and badge awards can change between samples.
Badges
0
Awards in past day
0
Thumbnails tracked
1
Last samples: badges 10/25/2026, 10:06:16 PM; passes 10/25/2026, 10:06:16 PM; products 10/25/2026, 10:06:16 PM.
Similar experiences by category and audience size.