As you play and find active card matches, there is an ecru bar that grows under your profile. If you cannot find any matches, the bar is shrinking. Your goal is to fill the bar because then you throw a choco-bomb at your opponent and you "freeze" up to 2 opponent cards for a few seconds, taking the advantage!
If your opponent completes the ecru bar, you will feel it…. First, a fireball will be thrown at your profile!
And then your game mode will have some "frozen" cards. The freezing will last for a few seconds during which you cannot play with the frozen cards.