It need not be titled with a numeral 3, but the game must be

• officially created or licensed by Valve or whoever owns the rights

• be released purposefully, ie not leaked

• be a continuation, narrative-wise, of Half-life 2: Episode 2. A minor addition such as what was in Half-life: Alyx will not count

• It must be an interactive narrative of some sort. A visual novel would resolve this YES, a comic or book would not resolve this

There may be some amount of subjectivity here, I will try to resolve in the spirit of the market. I will not trade on this market.

Apr 23, 11:43am: Will Half-Life 3 be released by end of 2030 → (M1000 subsidy!) Will Half-Life 3 be released by end of 2030