I couldn't find a Titan Quest catch-all, so I'm creating this new thread. Titan Quest’s Anniversary Edition Update
THQ Nordic releases a surprise title on Steam called Titan Quest Anniversary Edition for the game’s 10-year-anniversary and gifts the game to everyone calling either Titan Quest, Titan Quest: Immortal Throne or Titan Quest Gold their own on Steam. So, in numbers, more than 1 million people will automatically find the game in their library starting today.
For anyone who doesn't have any of the Titan Quest games on Steam (such as me; I still have the CDs and apparently never bought a digital copy), this Anniversary Edition is on sale for $5 through September 7, at both Steam and GOG.
The highlights of the update include improved performance, fixed bugs, and, most importantly, a big balance overhaul. You can find the huge list of changes here.