Immortal Throne is the only expansion for the game. It brings many seamless enhancements to the original campaign and works as an add-on. It requires the original Titan Quest to be installed. Immortal Throne is required for most patches and mods.
A bundle of Titan Quest and Immortal Throne is the most desirable version for newcomers (Oftentimes called Titan Quest Gold). Original version characters can be also imported into Immortal Throne, but the best option is to start a new game within Immortal Throne.
The German version offered by Steam is a low violence version and only available in German by default. English language support can be patched in, the game itself will stay low violence, though.
As noted above, the German version is a low violence version with German texts and dialog only. To enable English language support you have to download the language pack and replace a number of files in the installation folder of Titan Quest.
The full instructions (in German) and the language pack can be found here.
Acts as an external, independent, shared inventory. You can create unlimited Vaults, each holding whichever items you put in them. Useful for creating collections of rare items or "twinking" (giving characters items found by other characters, generally from later parts of the game and higher quality). It also has some item-editing features, such as the ability to change a relic's completion bonus, clone items or complete sets. User's of the Steam version of Titan Quest cannot use this tool. Use will likely result in corruption of all characters edited by the program.
HKEY_LOCAL_MACHINE\SOFTWARE\Iron Lore\Titan Quest
Players with the fanpatch installed can connect only with others that also have it.
There may be an error with searching and joining multiplayer games online through Steam. The error message indicated a problem with .\common\gsPlatformSocket.c with Expression theSocket != INVALID_SOCKET.
theSocket != INVALID_SOCKET
%USERPROFILE%\Documents\My Games\Titan Quest Demo\Settings\options.txt
language = English
tutorialTips = true
displayDamage = false
quickBuy = true
itemComparison = true
extraRollovers = true
masterVolume = 0.99
musicVolume = 0.99
effectsVolume = 0.99
dialogVolume = 0.99
ambientFrequency = medium
fullscreen = true
showTagErrors = true
useArchives = true
sendDebugMail = false
showAssertMessages = false
device = Direct3D
playerVsPlayer = false
forceSingleProcessorMode = true
splashScreen = true
language = English