Complex sentence: The first title was published in 1986 and there are currently ten main-series titles, numerous spin-off games, and nearly every game in the main series has either an anime or manga adaptation, or both.
Split into simpler sentences: The first title was published in 1986 and there are currently ten main-series titles and numerous spin-off games. Nearly every game in the main series has either an anime or manga adaptation, or both.