Shadow Cities has been out for over a year based on the NYT article, and still has no android client. Who can blame someone for developing a reality overlay for android, particularly when Shadow Cities is more fantasy-focused ("spells")? Is every reality overlay going to be called a Shadow Cities rip off? In that case both Shadow Cities and Ingress are a rip off of the reality overlay concept in Vinge's Rainbows End (which itself is a departure, but got some of its inspiration, from previous fictional virtual environments, like the one in Snowcrash).