It looks like Zynga’s newest mobile game is Zynga Slots

Zynga Slots appears to be Zynga’s newest iOS title, if the game’s presence in the Canadian and Australian App Stores serves as proof.

We spotted the game today in the Canadian App Store, where it apparently soft-launched on May 29. After a brief playtest, the title appears to be a fairly standard slots game. Like many other titles in the genre, Zynga Slots is free-to-play and monetizes through the sale of the coins.

Currently, Playtika’s Slotomania is the most popular slots game on iOS, sitting in the No. 3 spot of the top grossing app charts. Over the past few months, slots games have become extremely popular, with offerings from Playtika and DragonPlay rarely dropping below No. 10 on the iOS and Android top grossing app charts.

Although Zynga is somewhat late to the slots game party, the company has proved on iOS that it can come from behind to overtake leading games, particularly when it comes to the casino genre. At the beginning of 2011, Zynga Poker was lagging far behind offerings from much smaller developers like Kamagames and Self Aware Games. By June, however, Zynga had surged ahead of the competition and has managed to stay at the top of the iOS and Android charts. Zynga also has slots-esque title Zynga Slingo on Facebook, which our AppData currently tracks at 3.5 million daily active users and 15.7 million monthly active users, from which to cross-promote.

We’ve reached out to Zynga for comment. We’ll update this story as we learn more.