This extension is supported by Game Maker Studio 1.4 and GameMaker Studio 2 contact me at [email protected] if you have doubts or problems
InstantGames - Facebook for Messenger (HTML5 export)
Make games for Facebook Messenger!!
Get all the online features that InstantGames provide!
Social Features Custom Updates Custom Sharing Connected Players Changing Contexts Ads Monetization Interstitial Ad Rewarded Video Ad Leaderboards Analytics IAPs(when Facebook released, now is on beta) Documented
More info about InstantGames https://developers.facebook.com/docs/games/instant-games