World, OpenAI CEO Sam Altman’s digital identity project (formerly known as Worldcoin), is expanding into prediction markets by integrating Polymarket.
The World App, a mobile application that combines a digital wallet with World ID, World’s decentralized identity tool, has integrated the Polymarket app, the company announced on Tuesday.
“World App users can download and access the new Mini App starting today in countries where Polymarket’s services are permitted,” the announcement states.
Both World App and Polymarket face usage restrictions globally, and Polymarket has yet to reopen in the United States after receiving approval from the U.S. Commodity Futures Trading Commission.
World App users can bet on Polymarket using USDC and WLD
With the launch of the Polymarket Mini app on World, World App users will be able to place Polymarket bets directly from their World App wallet.
The app allows users to participate in prediction markets using two crypto assets, including Circle’s USDC (USDC) stablecoin and World’s native token, Worldcoin (WLD).
“Eligibility for World Coin tokens is limited based on geography, age, and other factors,” World said in the announcement, adding that tokens cannot be distributed via the World app to users who reside and are located in restricted territories, including New York state.
“World Assets and the World Foundation are not responsible for the availability of WLD on third-party platforms such as centralized or decentralized exchanges,” it added.
Number of downloads of mini apps worldwide exceeds 100 million
This integration comes on the heels of World passing the 100 million mini-app download milestone in early October, highlighting the growing popularity of third-party apps available within the World App.
First introduced in October 2024, World’s Mini Apps are web applications that integrate natively into the World App. As of March 2025, World’s platform had at least 150 mini-apps with 10 million WLD ($8.8 million) traded.
As of July, World had 14 million unique verified users on its platform, with a network spanning 160 countries and a total of 30 million users, the company said.
Prediction market trading volume hits new high at $2 billion
The global Polymarket consolidation comes amid a global boom in prediction markets, with trading volumes recently hitting an all-time high.
Weekly trading volume in prediction markets exceeded $2 billion for the first time in history in mid-October, according to data compiled by Dunedata in Dune Analytics.
Related: MetaMask lets users bet on politics and sports via Polymarket
The bulk of the activity came from Polymarket, which accounted for 52.3% of total trading volume, while its biggest competitor, Kalshi, posted about 47% or about $950 million.
Polymarket, the largest prediction market, secured a $2 billion investment from Intercontinental Exchange on October 7, highlighting growing interest from financial institutions.
On October 10, Kalsi announced that it had raised $300 million in a funding round led by Sequoia Capital and Andreessen Horowitz, and immediate expansion into 100 additional markets around the world.
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