I think we would have had the PC industry, followed by Call of Duty. The 360 and PS3 are casualised PC gaming (in a good way) and would have grown from that.
The quality of individual games would have been lower without the gold standards of Mario, Zelda, Final Fantasy, Mega Man. The focus would have been on multiplayer a lot sooner, and the single player cross-over-into-a-different-reality games would be much less developed.
Game music would not possibly not exist as an art form.







