The sad truth is that capturing lightning in a bottle is exceedingly rare, let alone twice or more. Cyan made at least 2 massive hits, which is 2 more than almost all game studios manage. Even their contemporaries Id Software didn't make that many more hits (Quake 3 was their last outright hit, releasing only 2 years after Riven).
There are almost no Bethesdas/Blizzards/etc that continue releasing hits for decades at a time.
There are almost no Bethesdas/Blizzards/etc that continue releasing hits for decades at a time.