New research reveals that the British Columbia government’s online gambling site earns 46% of its online casino revenue from just 5% of its players.

This week, the British Columbia Lottery Corporation (BCLC) celebrated the signing of a licensing agreement in which casino operator MGM Resorts would integrate BCLC’s GameSense responsible gambling program at MGM venues across the United States. MGM is the first commercial gaming company in North America to deploy such a program.

But a new study by the University of British Columbia’s Centre for Gambling Research suggests BCLC needs to step up its responsible gambling practices in its own backyard, given its online gambling site PlayNow.com’s reliance on a tiny fraction of its users for nearly half its online casino revenue.

The UBC researchers studied a single month (June 2015) of activity on PlayNow, during which the site welcomed 41,041 users who made 48m bets totaling C$118m (US $90m). Only 30% of players played the site’s casino yet the vertical accounted for 96.7% of all bets, with slots accounting for nearly 80% of online casino bets.