Files with the extension .WTF are text files used by 'World Of Warcraft' the 'MMORPG' (massive multi-player online role-play game).
.WTF files are text files that can be viewed / edited within any standard text editor i.e. 'notepad'.
Some .WTF files are configuration files such as 'realmlist.wtf' which contains information regarding server connection details.
Other .WTF file extensions