How many PC role playing games are there?

GameFAQs.com lists 100 games per page when browsing ALL GAMES. There are 256 pages of games. That gives an estimate of 256 x 100 25,600 games released as independent titles. This does not count separately the titles that claim to be something like 25 different versions of Mah Jong on one disc. That would simply count as one game in this scenario.