Hi Steph--welcome back! I don't think I've seen you on here for a while
For Episodes 1-4, it's unlikely we'll do a direct Linux port. This is because they were made in Torque, an engine that's rather outdated and not even actively supported anymore (by the company that made it). It's not impossible that it will never happen, but it would take a lot of programming work to get it there; the same with having a direct Mac version of those episodes, though I'd say that's slightly more likely. We have heard from a number of people that running the game through Wine works really well, though, and that's what we'll continue to recommend.
Episode 5 is a different case since we're making that one in Unity. Porting to Mac is very easy--we do Cognition in both PC & Mac--and when we upgrade to Unity 4, porting to Linux will also be much easier. There's no date set for when that upgrade will happen, though it's on our wishlist to be sure. So once that happens, and Episode 5 is complete, I don't see any reason why we wouldn't port it over to Linux as well.
As for having TSL on Steam, that's a no. The game is owned by Activision, not us, so distribution decisions go through them and they've preferred we only distribute it through our site. It's another thing I'd say could
maybe happen, but I very much doubt it ever will.
Thanks for the continued support!
