Mundo Aliens is an online store specializing in official and licensed mascots, collectibles, and novelty gifts. Its catalog brings together products for sports fans, especially supporters of Brazilian football clubs and the national team, alongside playful alien-themed items and pet toys. Customers can browse categories including cushions and plush toys, toys, keychains, cups, and collectibles, with merchandise representing clubs such as Corinthians, Palmeiras, Santos, São Paulo, Flamengo, Vasco, and Atlético Mineiro.

The range includes team mascots and plush animals, alien figures and plush dolls, rotating 3D club keychains, and cups commemorating teams and tournaments. Examples include pet plush toys, a plush rabbit toy with a squeaker, luminous alien figures, and alien dolls wearing themed shirts. The store also features products associated with causes and national identity, such as a plush alien wearing an autism-awareness shirt and one wearing a Brazil shirt. Shoppers can explore new releases, featured products, and best sellers, check product availability, and purchase through the online shop.