RedShift (US$1.99) is a tense game that simulates a situation of trying to stop a power facility from exploding. One gets the feel of some action movies where a clock is counting down to the inevitable, but hopefully preventable detonation.
The game features side-scrolling game play with excellent graphics and sound effects. As time moves on, the power plant gets more and more unstable. Your job is to deploy firefighting gear and stop the core of the plant from exploding by flipping override switches. A small map of the facility is displayed in the upper-left part of the screen, and then you are off to the races to explore the plant, dodge the fires that are burning, and get the equipment you need to stop the explosion.
I thought the gameplay was logical, and I like the fact there there were no instructions beyond the basic set-up of the scenario. You're thrown into the middle of the emergency, and you just need to get going, finding resources along the way and heading down the inevitable blind alleys. Every time you play the game the layout and events randomize, so you are never playing the same game twice. You can see a trailer for Redshift online via YouTube.
RedShift is a great little game that certainly will get your adrenaline pumping. It's a universal app, and requires iOS 6 or later. The app is optimized for the iPhone 5, and I found it worked well on both my iPhone and my second generation iPad.