Spry Fox Games are at work on a follow-up to their Flash, iOS and Android turn-based strategy game Steambirds. The original iOS version was developed in part by Semi Secret Software, makers of games like Canabalt. Now, they’re working on a new iteration of the game, and have partnered up with another major indie developer on this new version of the game. Entitled Steambirds: Survival, this sequel to the original Steambirds is being co-developed by Fruit Ninja and Jetpack Joyride developers Halfbrick.

This sequel to the original game features similar turn-based strategy gameplay. Players chart a course for their planes to fly, with the goal being to take out enemy ships, using powerups to help achieve this goal. All ships move and commit their actions at the same time. The game takes place in an alternate history steampunk-inspired universe, where players must try to lead UK planes against the Axis forces. While the gameplay appears at first to be similar to the original, at least in terms of core mechanics, this game focuses on endless survival levels instead of pure level completion. However, the mobile version is claimed to be a different game from the Flash version, with a mission-based structure, and a variety of new media and gameplay elements.

The game will be free to play as well. The Flash version, playable for free on Spry Fox’s Steambirds website, uses an in-game currency for buying new planes; the mobile versions will likely use a similar setup. It would be likely that coins will be able to be purchased through the app to speed up the process of buying new planes. The game is set to release in early October for iOS devices, with no word yet on an Android release. Until then, check out some screens and a trailer for the game.