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Scorpion451
(Edited uphill both ways)

A special mode in Idle Games where after filling up a meter by collecting a certain amount of items, you enter a "frenzy" where collecting them gives you more of the same item. IIRC this was in Cookie Clicker, where its Frenzy Mode gives you even more cookies, but it's also in other Idle Games to encourage the player to actively play by collecting the onscreen items.