GRAVNAV developers Andrew Nissen and Folmer Kelly -- under the new studio name Sets and Settings -- are preparing to launch Irrupt, the pair's first effort for iOS platforms.

In Irrupt, players guide an endless procession of astronauts from one spaceship to another, dodging asteroids along the way. As gameplay progresses, you'll be able to activate laser turrets that clear out some of the incoming debris. Kelly offers a discussion of the game's design and visual style in a series of posts at the game's official website.

Irrupt will be priced at 99 cents when it launches in the App Store this Thursday, September 27th.