Disambiguation is the process of resolving conflicts when a title could apply to more than one article. It serves much the same purpose here as it does in Wikipedia.
“Gravity can refer to either of two things: The downward motion of the active tetromino; see...Gravity
“TDX is a three-letter abbreviation that can stand for any of several things: Tetris DX for Game...TDX
“TI can mean Tetris The Grand Master 3 Terror-Instinct, the first game from Arika to implement...TI
“TNT is a three-letter abbreviation that can stand for any of several things: The New Tetris for...TNT