The Concave Wonderland
★★★★★ 4.8 · 2319 reviews · SKU MW-81132
812,577,479.00 Altairian Dollars
In production — ships in 3 epochs
About this build
A demonstration showcase at 14,200 km outer diameter with a 2,600 km artificial interior sun and interior ocean covering 78% of inner surface. Includes 23 island settlements, undersea research facilities, and interior-navigation guides. Atmosphere cycles synchronized to interior sun (20-hour day cycle). Geological investment: 33 epochs. Winner of the Magrathea Innovation Showcase Award.
Specifications
| Climate | Tropical Storm Cycle |
|---|---|
| Coastline Complexity | Single continental mass |
| Delivery Estimate | 8-10 days (premium handling) |
| Diameter | 6,371 km |
| Star System | Triple system with resonance |
| Surface Gravity | 1.2g |
| Warranty Coverage | Perpetual ownership (no expiry) |
Customer reviews
My hollow demonstration planet arrived perfectly. The interior cavern system is lit with bioluminescent crystalline formations that shift color with the seasons. It's become the centerpiece of my collection.
The hollow planet's interior caverns flooded unexpectedly during the first season. This required expensive remediation work. Not the experience I expected.
Testing circular economy models on a controlled world. Everything predicted by models actually works. Publishing game-changing findings on sustainability.
The alpine crystalline peaks are magnificent, though some peaks took longer to reach their full brilliance than expected. Once they settled, they're absolutely gorgeous.