With the file extension CT so-called cheat table, so cheat tables of the cheat software Cheat Engine are marked. Cheat Engine is an open source software for creating cheats or modifications in Windows based single player games.
CheatEngine is game-independent because it can scan computer memory for changing variables while playing. In CT files are the corresponding memory locations and variables to be changed in order to overwrite them while the game is running. Thus, for example, increase the number of lives or increase the account.