Could we finally be getting Left 4 Dead 3? Half Life 3? Has Gabe Newell finally learned to count higher than two when it comes to sequels for their games?

A recent AMA with the Valve boss saw a bunch of interesting questions and responses, however we’ve collected the most pertinent ones.

When asked about the company’s plans for the Source 2 engine, Gabe said:

“We are continuing to use Source 2 as our primary game development environment. Aside from moving Dota 2 to the engine recently, we are are using it as the foundation of some unannounced products. We would like to have everyone working on games here at Valve to eventually be using the same engine. We also intend to continue to make the Source 2 engine work available to the broad developer community as we go, and to make it available free of charge.”

Gabe also sounded off regarding a potential Left 4 Dead 3, release, while also mentioning regrets he felt with the Half Life series:

“When we decided we needed to work on markets, free to play, and user generated content, Team Fortress seemed like the right place to do that. That work ended up informing everything we did in the multiplayer space. Left 4 Dead is a good place for creating shared narratives.

The issue with Half-Life for me is that I was involved in a much higher percentage of the decisions about the games, so it’s hard for me to look at them as anything other than a series of things I regret.”

Gabe even talked up the hot button issue of porn games on Steam, and how the publisher should approach them being released on the platform:

“In principle, there are two problems to solve. The first is a completely uncurated distribution tool for developers. The second is a toolset for customers that allow them to find and filter content (and people are an instance of content most obviously in multiplayer) that is best for them.”

Finally, Gabe confirmed the set of two movies taking place within the Half Life/Portal universe are definitely coming, in case you ever wanted them.