Polymarket Joins Sam Altman’s World App as Prediction Markets Hit $2B

TLDR

• Polymarket now live on World App, enabling WLD and USDC-based prediction bets.
• Weekly trading on prediction markets surpassed $2B in mid-October 2025.
• World App crossed 100M Mini App downloads and has 30M total users.
• Polymarket secured a $2B investment from Intercontinental Exchange in October.

Prediction markets are reaching new records, with weekly trading volumes surpassing $2 billion for the first time. At the center of this surge is Polymarket, which now accounts for over half of this activity. The recent launch of Polymarket as a Mini App within Sam Altman’s World App connects this fast-growing market with millions of verified digital ID users across 160 countries.

Polymarket Integrated into World App’s Growing Ecosystem

Sam Altman’s World App has added Polymarket to its Mini App platform. The integration allows users to access prediction markets directly from their wallets. Users can place bets using either Circle’s stablecoin USDC or Worldcoin’s native token, WLD.

According to the announcement, only users in supported regions can access the Polymarket Mini App. The service is restricted in some areas, including New York, due to local regulations. World also confirmed that it is not responsible for the availability of WLD on third-party platforms or exchanges.

World App functions as a digital identity and wallet solution and supports decentralized applications through its Mini App system. Introduced in late 2024, these Mini Apps are web-based and work directly within the World App interface. The Polymarket Mini App becomes one of the latest additions to this expanding ecosystem.

World App Surpasses 100 Million Mini App Downloads

World announced that its Mini Apps have surpassed 100 million downloads as of early October. The milestone comes less than one year after the feature launched. World’s platform now hosts over 150 Mini Apps, offering a wide range of services to its user base.

As of July 2025, the platform had 14 million verified users and a total of 30 million app users across 160 countries. World ID, its decentralized identity protocol, is used to verify these users as unique humans.

Data from the company also shows that 10 million WLD, equivalent to $8.8 million, had been transacted on the Mini App network by March 2025. The integration of Polymarket is expected to increase this activity further, especially with the rising demand for on-chain prediction tools.

Prediction Markets Set New Trading Records in October

Dune Analytics reports that prediction markets hit a new weekly trading record in mid-October. Total volume reached over $2 billion, marking the highest figure ever recorded in the sector.

Polymarket accounted for 52.3% of the volume during that period. Its closest competitor, Kalshi, held about 47%, equal to $950 million. This jump in volume reflects growing interest from both retail and institutional users.

In early October, Polymarket secured a $2 billion investment from the Intercontinental Exchange. A few days later, Kalshi announced a $300 million funding round led by Sequoia Capital and Andreessen Horowitz. Kalshi also shared plans to expand into 100 more global markets.

Access and Use of Polymarket on World Remain Limited

While the Polymarket Mini App is now live on World, access remains subject to several restrictions. World App states that eligibility depends on age, location, and legal status. In particular, the app is unavailable to users based in regions with active service restrictions.

The platform emphasizes that users must follow local laws before accessing or using prediction services. Moreover, World clarified that the distribution of WLD tokens is restricted and not available in some countries or U.S. states.

World Foundation noted, “Eligibility for Worldcoin tokens is restricted based on geography, age and other factors.” It also reminded users that the availability of WLD on exchanges is beyond its control.

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