Complex sentence: It was first released for PCs and Macs in October 2014, then for iOS in February 2015 as free-to-play, with paid premium accounts for unlimited playing time and other features.
Split into simpler sentences: It was first released for PCs and Macs in October 2014, then for iOS in February 2015. It is free-to-play, with paid premium accounts for unlimited playing time and other features.