Chromium ES is one of the best games available in Linux, now on your iPhone! It's a fast paced, arcade-style, top-scrolling space shooter. Chromium ES is a modified version of the standard Chromium BSU (http://www.reptilelabour.com/software/chromium/).
Youtube video of gameplay:
You are captain of the cargo ship Chromium E.S., responsible for delivering supplies to our troops on the front line. Your ship has a small fleet of robotic fighters which you control from the relative safety of the Chromium vessel.