Prediction markets hit $2B weekly as World App adds Polymarket integration.
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World, the digital identity platform founded by OpenAI CEO Sam Altman, is expanding its ecosystem by integrating Polymarket into its World App.
This move allows users to engage in prediction markets directly through World’s wallet, using both the platform’s native token, Worldcoin (WLD), and the stablecoin USDC.
The Polymarket Mini App is now accessible to World App users in countries where Polymarket operates, providing a seamless way to participate in global prediction markets. While the platform is still limited in certain regions, including New York state, the integration reflects World’s strategy of combining decentralized identity with emerging financial applications.
This launch comes shortly after World celebrated a milestone of over 100 million Mini App downloads, highlighting the growing popularity of third-party apps within its ecosystem. Since its introduction in October 2024, World has steadily expanded its Mini App offerings, hosting more than 150 apps as of early 2025, with millions of WLD tokens transacted across the platform.
The timing of this integration coincides with a surge in prediction market activity. Weekly trading volumes recently surpassed $2 billion, driven largely by Polymarket, which accounts for over half of the market’s activity. Competitors like Kalshi are also seeing substantial growth, reflecting increased interest from both retail and institutional participants. Notably, Polymarket secured a $2 billion investment from the Intercontinental Exchange in early October, while Kalshi raised $300 million from investors including Sequoia Capital and Andreessen Horowitz.
By bringing Polymarket into World App, the platform is positioning itself at the intersection of blockchain-based identity and decentralized finance, offering users new ways to interact with financial markets while leveraging a secure, verified digital identity.
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