Fallen London released last night for iOS universal; it's free to download and there's a $6.99 monthly subscription if you're so inclined. I've been playing for a few months in the browser version and never found the need to subscribe - that gives you more actions and an exclusive story line every month that non-subscribers don't access. I've found that the amount of available actions are perfect- I get just enough gaming in to satisfy, but don't get sucked into an endless gaming loop. Great storybook RPG type game.
App store link: https://itunes.apple.com/us/app/fallen- ... 72891?mt=8
Web site: http://fallenlondon.storynexus.com/