The Concave Wonderland
★★★★☆ 4.0 · 715 reviews · SKU MW-72562
561,625,562.00 GBP
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 | Archipelago intensive (4.1 factor) |
| Delivery Estimate | 4-6 weeks (artisanal crafting) |
| Diameter | 18,600 km |
| Star System | Suspended in Pocket Dimension |
| Surface Gravity | 1.0g |
| Warranty Coverage | 10-year catastrophic event protection |
Customer reviews
As a geophysicist, I'm amazed by the precision. The mantle convection modeling, crustal composition, tectonic stability—all legitimate. This isn't fantasy, it's engineering.
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 sentient-atmosphere functionality on my world is extraordinary. It learns my preferences and adjusts environmental conditions intuitively. Pure technological poetry.
The hollow planet's interior collapsed. I almost died exploring the caverns when sections failed without warning. Magrathea accepted no responsibility.
Disappointed. The polar ice world's refrigeration systems failed after two weeks. Replacement process was slow.