Bingo & Slots Friendzy goes live on the Facebook UK App Centre.
Gamesys, which runs the UK bingo and slots website Jackpotjoy.com, reckons it's made history with this launch.
The move could only be made in the UK, where gambling laws are among the most liberal in the world.
Thus, Bingo & Slots Friendzy will only be available to over 18 year old Facebook users in the UK who will be subject to strict account acceptance controls verifying their identity.
Facebook will ensure that their newsfeed activity related to the games will not be visible to users under 18 years old or outside the UK.
The app itself comprises features such as:
* Community progressive jackpots
* Bonus games which gives players chances to win free bingo tickets
* Invite a Friend rewards
"We are committed to extending our products to a wider adult audience," said Jackpotjoy MD Michael Saunders.
"So we've reinvented our exclusive bingo and slots games to appeal to the UK Facebook community. This marks an exciting turning point for the industry and a milestone for the Gamesys business."
Gamesys' Jackpotjoy online bingo site has over four million players and pays out in excess of £200 million in prize money every month.