Half Life 3 cause the internet would jizz simultaneously when that gets announced and it would be epic

Well, Half-Life is still not finished, so...

HL 3

Would love a new Portal game :)

Nothing...is that a valid option?

Yeah though im not sure why you would make a comment

Interesting question. I'd want them in this order:

1) Half-Life 3 -- the first and second Half-Life games are among the best first-person shooters ever made. The second is Valve's greatest achievement, in my mind.

2) New IP -- the developers and programmers at Valve are some of the best in the business. It would be interesting to see what new ideas and mechanics they can summon for a new franchise.

3) Left 4 Dead 3 -- as someone who played the first two games in the Left 4 Dead series for hours on end, I would enjoy a third game with a new set of characters, new weapons, and new infected monsters.

4) Portal 3 -- as much as I love Portal 2, I think the series has run its course.

Because I'm still pissed about L4D being a half-finished game. HL is good game but it didn't blow my cock away. I think Valve is pretty overrated. Much more interested in what Bethesda can do with Fallout 4. 

A L4D Collection HD, Orange Box/Portal HD Collection would keep me happy until they announce something new.