No, Half-Life 3 not confirmed https://www.theguardian.com/games/2018/nov/21/half-life-at-20-valve-shooter-sci-fi-horror It's a little much to call it THE most important shooter, because this mantle could easily belong to several other games such as Halo and Doom, but it'd certainly be ranked up there, though I'd agree on basis of how it changed the industry of how to perform story-telling. We probably wouldn't have Steam and many online services wouldn't exist in their current form if it weren't for HL's success. Heck, I think even Fallout 4 pays homage to its gameplay mechanics. What are your memories? Any thoughts on anything that came about as a result of Half-Life?