Complex sentence: He wrote a 460-page design document (completed in May 1997) outlining the universe of "Anachronox", beyond the game's scope; other game design documents of the period, he noted, were usually only 125 pages in size.
Split into simpler sentences: He wrote a 460-page design document (completed in May 1997) outlining the universe of "Anachronox", beyond the game's scope. He later noted that other game design documents of the period were usually only 125 pages in size.