Half-Life 3, the non-existent sequel to one of the most legendary video game series of all time, has achieved an almost mythical status. It’s been 18 years since Half-Life 2: Episode 2’s cliffhanger ending, without a word from Valve about a follow-up since. However, over the past year, rumors and theories have swirled about Half-Life 3 being announced before the end of the year.