I Tried Creating a Game Using Real-World Geographic Data

Sebastian Lague's Coding Adventure in which he tries to build a game from real-world geographic data. He works through turning latitude and longitude into countries and rendering and exploring the Earth.

HN people point to it as a fun, clear tour of working with geographic data, and as the source of a trick for mapping coordinates to countries.

“You should also check out his series about a geographical game he built”