Board Thread:Fun and Games/@comment-7202143-20151231133736/@comment-17481441-20151231161030

Vortigaunts have 4 fingers total, along with 4 eyes, and 4 nipples. If this confirms Half Life 4, then there has to be a Half Life 3!

Another way you could think of this is that 4 + 4 + 4 = 12. 12 divided by 4 is 3, so Half Life 3 confirmed!