only one star because some of the upgrades have a button that can't be pushed say to upgrade the grenade the ads often push you out of the app and you lose the benefits and once you forcefully are put in the app store the app restarts I would avoid continuing after falling because of that I'm not bothered by ads I get that they keep the the game running and up but some ads are very Rapey in there approach and to be that person not all ads... outside that I think it's a great take on rogue io