Complex sentence: The use of external Rumble Paks, since their introduction, is rare today, mainly because the force feedback vibration that they provide has become a built-in standard feature in almost every home video game console controller since.
Split into simpler sentences: The use of external Rumble Paks, since their introduction, is rare today. This, however, is mainly because the force feedback vibration that they provide has become a built-in standard feature in almost every home video game console controller since.