Gold Generator is the strange floating stone that drops some coins when clicked.
It is the one and only source of gold when a player launches the game for the first time. The amount of gold that can be obtained from the gold generator is defined by the clicking power. Initial clicking power is 1 gold per click (GPC). Clicking power can be increased by numerous upgrades, amulets, buildings, global skills etc.
Gold Generator has cooldown which means that player should wait some time before he will be able to click again. Initial cooldown is 5 seconds. Cooldown can be decreased by upgrades, amulets, global skills, power ups etc.
Decision to implement cooldown between clicks is pretty controversial. Some players believe that cooldown makes the game less fun. But most players are sure that cooldown is one of the game's main features and allows to make clicking really powerful and upgradeable.