Which franchises have you bought the most games into?

[Son1x]

Lets see

Lunar - 6 (TSS, EB, SSSC, EBC, MS and DS)
Warcraft - 6 (WC2 battle net, WC3-RoC, WC3-TFT, WoW, WoW-TBC, WoW-WotLK)

Few other franchises where I have most of the games, but there aren't that many (UT, Total War...)

I guess Half-Life too, I have HL, HL:OP, HL:BS, CS1.6, HL2, CS:S, Ep.1 , Ep.2 , TF2 and Portal. Those are the ones I bought.