In 1998, Hideo Kojima single handedly changed the scope of gaming with one game: Metal Gear Solid.  Within Metal Gear Solid, there were ten VR Missions.  Surprisingly, people spent a lot of time with these VR missions, trying to clear them as fast as possible and honing their skills.  When word of this got out, Konami developed Metal Gear Solid: VR Missions.  A game that consisted of nothing but VR missions for the gamers that wanted them.