The problem is that the PC/computers was the dominant platform for Western developed games for a long time, so it's a crucial factor in genre establishment in the West. You all but have to figure it in. The western genres that thrive today on consoles have origins on the PC: FPS, RPG, 3D action/adventure, action RPGs/dungeon crawler. Hell, the PC inspired genres that are major in Japan today. RE and survival horror from Alone in the Dark, DragonQuest/Warrior and JRPG from Ultima, Wizardry, and Might and Magic, Metal Gear from Castle Wolfenstein, Tactics RPGs from the various PC turn based strategy games.
And let's not forget about all the classic western developed arcade games that influenced and inspired gamers and developers alike. Games like Gauntlet, Defender, Pitfall, etc.
