Credits are a premium currency. You earn +1 credit for each daily task you complete, and can buy more in the store in packs of 10, 100 or 1,000 (real-money purchase via secure checkout). Spend credits to skip an hour of your current idle activity instantly (Skip 1h), to skip straight to a boss or raid kill while fighting one, or to skip a slayer task you don't like. Skip 1h also works on travel and journeys: it advances exactly one hour of trail time, so a longer journey continues from partway along. Credits are tracked server-side on each character.