Complex sentence: In addition to these modifications, it changes the sounds of certain characters, for example one friendly NPC features the same sound clips as Barney Calhoun from "Half-Life" but has been edited to affect a deeper voice.
Split into simpler sentences: In addition to these modifications, it changes the sounds of certain characters. For example, one friendly NPC features the same sound clips as Barney Calhoun from "Half-Life" but has been edited to affect a deeper voice.