Iron Marines Invasion is a Real Time Action Strategy that despite offering a casual approach, with very few options compared to most popular RTSs, manages to provide an excellent level of challenge. Colorful and fast-paced, with missions that hardly last more than ten minutes, it entices you to experiment thanks to the ability to change troops on the fly, although after a couple of defeats you will already know which soldiers to start with. A pleasant confirmation that even games initially designed for smartphones can be appealing on PC. Those looking for hardcore strategy, however, will prefer to skip it.