Not publisher, developer.
For me, it's an incredibly close-run affair between Blizzard and Valve. With Starcraft, Diablo 2, WoW, Warcrafts 2 & 3 versus HL1&2, CS, DoD, TF2, L4D, Ricochet, DmC etc (sorry for the masses of abbreviations), both sides have compelling arguments.
But it's got to be Blizzard. Valve have relied on mods to come up with most of their games, and have covered just one genre. Blizzard have done a lot more.
Anyone else?
For me, it's an incredibly close-run affair between Blizzard and Valve. With Starcraft, Diablo 2, WoW, Warcrafts 2 & 3 versus HL1&2, CS, DoD, TF2, L4D, Ricochet, DmC etc (sorry for the masses of abbreviations), both sides have compelling arguments.
But it's got to be Blizzard. Valve have relied on mods to come up with most of their games, and have covered just one genre. Blizzard have done a lot more.
Anyone else?