As per Should we standardize our tag formatting regarding Arabic vs. Roman numerals?, the official spelling of the game title should be used in the tags whenever possible, instead of replacing Roman numerals with Arabic numerals.
Requesting that these tags be synonymized (current tag » official game title tag):
age-of-empires-2 » age-of-empires-ii-the-age-of-kings
age-of-empires-2-hd » age-of-empires-ii-hd
age-of-empires-3 » age-of-empires-iii