This is a Civ3 version of the AuthaGraph World Map, being discussed in this thread. As mentioned in that thread:
“This rectangular world map [..] is made by equally dividing a spherical surface into 96 triangles, transferring it to a tetrahedron while maintaining areas proportions and unfolding it to be a rectangle.”
Two sizes are included, 116x100 and 232x200.
The map as-is was created with the Import Map from BMP functionality in Quintillus's editor, and has not been modified from that as yet. As such, it is currently in a prototype/proof-of-concept phase, intended for mapmakers to build out the terrain rather than to be played as-is. This is in large part due to the only available source map being low-resolution and a political map, rather than the high-resolution satellite maps that are easiest to get up and working quickly.
Please feel free to enhance this map with more accurate geography, inland terrain, and resources.
AuthaGraph World Map 0.2
New 2D map projection from Japan makes it to Civ III
- Source BMP included Nov 25, 2016