Tally is a browser extension that transforms data advertisers collect into a multiplayer game. Once installed, a friendly pink blob named Tally lives in the corner of your screen and warns you when companies translate your human experiences into free behavioral data. When Tally encounters ¡°product monsters¡± (online trackers and their corresponding product marketing categories) you can capture them in a turn-based battle (e.g. ¡°Pok¨¦mon style¡±) transforming the game into a progressive tracker blocker, where you earn the right to be let alone through this playful experience.