Rummble, the location-based social ratings mobile startup, has just released a new version of its iPhone app containing what is effectively its answer to Foursquare.

The feature is called “Local Heroes” and is billed as “the fun side of Rummbling” but it is quite obviously going to be Rumbble’s way of attacking the buzz surrounding the game of checking-in and becoming a “Mayor” of a location as propogated by the New York-based Foursquare. Local Heroes is a feature listed under “Empire” which suggests that there will be yet more gaming elements introduced.

Rummble has until now relied on its users to create content about places they visit and rate their friends’ ability to do so – what it calls the Rummble trust network. But clearly that’s not quite enough in the face of big players like Qype, dominant in Europe for local reviews, and Yelp in the U.S.

So Rummble is entering the social location gaming pushed by the likes of Foursquare and Gowalla.