Fast Mode is a Word Crack game mode in which you will be able to play without having to wait too long for your opponent to play their turn.
Regarding the gameplay, it remains the same, except you will have 5 minutes to play your turn and then the turn will be passed on to your opponent.
It's important to keep in mind that, if you pass three consecutive turns, the game will end and your opponent will be determined the winner.
You will find this game mode by pressing "New game" on the main screen and selecting "Fast" represented by a lightning bolt. It will also be available in the Playroom, in the second icon from the left, at the bottom of the screen.