Achievements
Milestones from your own play
Eight things worth doing across the four games. They unlock from this browser's play history alone — there are no accounts and no server, so nobody's watching and there's no one to compete with but yesterday's you.
Unlocked so far: 0 of 8. Clearing your browser's site data resets the lot — they're stored in the same local jar as your coins.
Achievements are for fun only. Like the coins, they carry no value and unlock nothing beyond the satisfaction.