软件介绍：

Steambirds: Survival：In the Steambirds universe, the Allies are losing the war against the Axis powers and their incredible Armada. As an elite Allied pilot, your goal is to stand your ground against endless waves of Axis aircraft. The odds are overwhelming. You're hopelessly outnumbered. The United Kingdom is almost certainly doomed, but you *might* be able to save its citizens.... if you can hold off death long enough for them to evacuate!

Steambirds: Survival features 8 unique aircraft and 64 unique missions at launch (with another 7 aircraft and 56 missions scheduled to be released as free updates soon after launch.) Each plane in SB:S has its own strengths and weakness which will require you to change your strategy if you want to succeed. You'll also need to collect powerups dropped by enemy aircraft; grabbing and using these at the right time will be the key to your survival.

Steambirds: Survival, the sequel to the hit game Steambirds (first released in 2010 and played by over 12 million people worldwide) is brought to you by its original creator, Spry Fox, and by Halfbrick, the developer of Fruit Ninja and Jetpack Joyride.

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IMPORTANT NOTE FOR CURRENT CUSTOMERS: If you have previously purchased the "unlock all cities" upgrade, after you update the game, the cities may once again appear locked. This is easily rectified! Just verify in iTunes Purchase History that your purchase is there, then click the "buy" button again (you won't be charged twice.) If for some reason the purchase is *not* showing up in iTunes, just email us and we'll help you.
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