Complex sentence: It was the first adaptation of TSR's "Advanced Dungeons & Dragons" ("AD&D " or"D&D ") fantasy role-playing game for home computers, becoming the first episode in a four-part series of"D&D" computer adventure games.
Split into simpler sentences: It was the first adaptation of TSR's "Advanced Dungeons & Dragons" ("AD&D " or"D&D ") fantasy role-playing game for home computers. It is the first in a four-part series of"D&D" computer adventure games.