The prospect of Half-Life 3 doesn't seem too strong, but even still, there's a lot of great ways for Valve to finish off the spectacular story that was set up in Half-Life 2 way back when in 2007.
On 10th October 2007, Valve released Half-Life 2: Episode 2, the continuation of Gordon Freeman’s story as he and his friends fought to free the human race from the oppression of the alien Combine. The ending provided very little in the way of closure, setting up a number of plot points for Half-Life 3. But 13 years later, a sequel has still never arrived.
