Complex sentence: Started in 2008, DigiPen's campus at PIXEL Building, One-North 10 Central Exchange Green, Singapore, occupies the first 2 levels of a 3-storey building.
Split into simpler sentences: Started in 2008, DigiPen have a campus at PIXEL Building, One-North 10 Central Exchange Green, Singapore. It occupy the first 2 levels of a 3 storey building.