GameDevMap is suuuuper outdated. Plus; that wikipedia link was missing a ton of studios and has listed a ton that don't exist anymore. It doesnt even have SplashDamage on there, yet it has BizarreCreations which shutdown a while ago
Total War looks awesome I'l be having that soon. Do you know if your on GameDevMap.com? I have seen way more studios on there than that wiki list although its poorly maintained. Many of the links on GameDevMap seem to be broken or linked to studios that went out of business years ago.