After a successful run on iOS and as a downloadable title for the Xbox 360 and PlayStation 3, Taito's evolution-themed Space Invaders sequel Space Invaders Infinity Gene is now available for Android platforms worldwide.

Like Space Invaders Extreme before it, Infinity Gene captures the core elements that made the 32-year-old (!!) arcade game so much fun to play, while successfully updating the series with modern concepts like "music" and "colors." It also boasts a lengthy campaign and a whole mess of fun bonus modes.

Infinity Gene is a wonderful app -- it was my very favorite iOS game of 2009, and it plays especially well on touch screens. If inventive shooters are your thing, you need to check this one out.