Complex sentence: Tim Sweeney is a computer game programmer and the founder and president of Epic Games, previously known as Epic MegaGames, which he established as a shareware company while he was a student majoring in mechanical engineering at the University of Maryland.
Split into simpler sentences: Tim Sweeney is a computer game programmer and the founder and president of Epic Games, previously known as Epic MegaGames. He established Epic as a shareware company while he was a student majoring in mechanical engineering at the University of Maryland.