"Quake" was the first game that id Software released after they made "Doom" and "Doom 2." It is a very similar game to "Doom", but "Quake" is on a new game engine and has much more advanced technology. For example, "Quake" lets the player look up and down, lets the player jump, it has fully 3D graphics, and has many more options for multiplayer than "Doom" had. "Quake" is famous for its multiplayer, and it was one of the first games where lots of people played multiplayer through the internet. "Doom" also had online multiplayer through a service called DWANGO, but "Quake" made playing online more popular than ever before. Tools like QuakeWorld and QuakeSpy made it very easy for players to find other people to play against over the internet.