The Concave Wonderland
★★★★★ 4.8 · 168 reviews · SKU MW-6052
140,992,918.00 Altairian Dollars
Made to order
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 | Desert Continental |
|---|---|
| Coastline Complexity | High bays and inlets (6.2 factor) |
| Delivery Estimate | 2-3 weeks (standard shipping) |
| Diameter | 18,600 km |
| Star System | Circumbinary system |
| Surface Gravity | 1.2g |
| Warranty Coverage | 1-year all-systems coverage |
Customer reviews
Magrathea delivered a moon cluster that exceeded my specifications in every way. The gravitational harmonics are perfectly balanced, and the orbital paths create stunning visual alignments. Truly exceptional work.
My hollow planet is interesting to explore, but maintaining humidity in the interior caverns is more labor-intensive than expected.
As someone from Siberia, I was skeptical about synthetic ecosystems. The taiga package is genuinely indistinguishable from the real thing. Impressed despite myself.
Used for ecological research. Data collection is excellent. Just expect to invest in proper instrumentation.
The hollow planet option was the best choice I ever made. Exploring the interior caverns with their crystal formations is like being inside a geode the size of a world.
The award-winning coastline design they provided is world-class. The beaches shift between crystalline sand and black volcanic glass—each section a masterpiece of terraforming artistry. Visiting is pure bliss.