Here is a place where you can see huge procedurally generated worlds with correct spherical geometry. These worlds have the following features:

• the flexible configuration of world generation parameters
• custom outlines of the continents
• the full-fledged river system with z-coordinate, and highland lakes
• biomes with the placement dependent on longitude, latitude, and altitude
• the gradual transition of biomes is achieved by the mutual penetration of their parts (yin-yang boundary)
• technology of noise generation (fBm) on a triangular domain
• vector data which define the relief features (continent and lake boundaries, biome boundaries, rivers, height contours, tiles and sectors, etc.);
• data are instantly suited for existing Geographic Information System (GIS) software;

NFT Collection: Forged Universe

Worlds are available as NFT tokens on opensea.io; these tokens have links to detailed planet maps in their unlockable content. Mini-samples of the latest tokens are below

See the site’s dedicated page for the complete list of mini-samples or browse tokens directly in the collection.

Sample planets

Pandemic. This planet has letter-shaped continents and planetary wide biomes. Pandemic planet’s page with data The big planet model with ocean sectors

Devil of the Rings (dotr). Specifically defined crater-like form of continents. The biomes are determined solely by altitude. This planet’s page with data The big planet model

For more info see my blog.

List of all planets can be found here.