Modding the game

[NessaWyvern]

From official side, it's against ToS, since you change game files so you can be warned and banned for this.
Still, system does not really check files so you can be okay with mods as long as you don't mention that you use them in game and don't post your screenshots with modded items on Official Forum.

Wait, does that mean I should be reporting 50% of people on the "Show your x!" forums, as some of them are clearly using modded shaders/textures in some of them.