Mini games are a very special type of games. In fact, in a usual game, there are different levels of increasing difficulty in which you must always do the same action. In mini games, there is plenty of kinds of different games in one game.
We can for example think of the famous ClickPlay, in which you must find a play button and of the series of the Binga games, which are games which combine speed and reflexes.
You need to be fast in mini games, and sometimes they are timed.
In some mini-games, the number of clicks is counted and it will determine the score at the end.