I'm playing INVISIBLE INC. on Steam. Its very fun and more of a puzzle stealth game than a fighting one. It is a turn based game which I prefer for casual play. Very frustrating though, as their is no take backs. If one of your spies dies, you have to go on without. But if you don't take risks you wont earn any money to buy any power ups and will die because of the rising difficulty of each site. The story mode lasts 60 hours game time and you try to make the best score you can in that window. Haven't yet gotten even close to the end of the 60 (maybe 30+).