Shadowrun, especially before the wireless era
Having to run the mages in astral, the meat men in real world, then the decker in the matrix and keep the 3 time systems synched, engaging for all 3, make it feel like its not all about 1 group ect.
Its hard to keep it all fun for basicly 3 separate systems with diffrent goals and layers.

A good shadowrun 3rd ed gm is a skilled man