The game was developed by 65 Media, a marketing firm known for its past work on interactive and alternate reality games (ARGs). Ambush may not be a true MMO in the client/leveling/loot sense, but has a system of points gained through employing traps and counter-traps. It's perhaps more akin to Aurora Feint's debatable label as an MMO title, which has already proven to be very popular. Such titles are the earliest forays into that grey area of 'MMOs' for the iPhone, and more are certainly on the way. Ambush is free-to-play and available for iPhones with the 2.0 Software Update, downloadable at the Apple App Store. More information about the game, and how to play it on both the iPhone and online, can be found in the Ambush FAQ.
[Via Spoiler TV]