Download the official Como Funciona o Jogo do Bixo Android app — the complete guide to the traditional animal and number game. This gaming platform explains all 25 animal groups, two-digit dezenas, and how each group links to four consecutive numbers from 00 to 99. Browse reference tables, practice with easy, medium, and hard quizzes, and track achievements and daily streaks. A local reference and entertainment tool — does not display official draw results. Install now and master the classic numbers-and-animals system.