Tatem Games is a mobile games studio out of Ukraine that's been making games since the mid-'90s. They originally started with PC games, CEO Igor Karev told me here at GDC 2011, but lately the company's focus has been on the iPhone and the iPad. "It's about timing," Karev says, "we can make cool games, and not spend two years on them." The company's biggest titles are the Carnivores games, a series of 3D "hunting" games (though the titles have grown to encompass more than just killing things) that started out on the PC and have since garnered 3.5 million downloads.
The Carnivores games have a dedicated user base, and Tatem closely follows customers' advice, structuring updates around iTunes comments and input. There is an update due out soon that will bring more mythical creatures into the games, as well as new weapons to use and a new game mode requested by users who don't want to kill the animals; it'll be a photo hunting mode instead, letting the player wander the world with a camera rather than a gun.