that's still skyrim, 1 game. Anchorage is DLC. FNV i counted in 5main entries, you do know that, right? fallout 1 2 black isle studios, fallout 3 4 bethesda, fnv black isle studios again.

i did leave out f76 which for some reason you missed. that would bring main fallout games to 7 8. same as tes series with their online.

edit london is what, a fan made total overhaul? that's no official game release. if it bears name fallout it can't be commercially sold.