The new set of stages will be added to Angry Birds Seasons, presumably for free and for both the iOS and Android versions of the game. We've got a trailer of the new levels for you below, and while it features the Angry Birds action we all know and love, any sort of drunken debauchery and/or alcohol-induced vomiting is strangely absent. On those factors, it fails as a true celebration of St. Patrick's Day. But hey, we like the game so we'll give it a pass.
Check it out, lasses and laddies: