Along with most of Asia, Africa is definitely an area of the world massively under-developed for flight simulators in general.

OFX Simulation are trying to go someway to dealing with that lack of coverage, in FSX at least, and this is the first part of their efforts, covering 3235 km² of landclass and improved mesh around the cities of Lomé in Togo and Lagos in Nigeria. Also including coastline improvements, the addition of villages and towns missing from the default scenery and much more, you can find full details and purchase a copy via the product page at simMarket.