Open Legend
I've considered running a game or two on this system. I'm currently playing in one, it just got started so I'm still play testing the system. However, I do love the flexibility and simplicity of it. As far as I can tell, it is basically a simple system for conflict resolution, that allows you to tell whatever story you want.
I've had a few ideas brewing. One is using this system for running a game based on the "Mass Effect" series. The other idea I had was running one based on "Miss Peregrine's Home for Peculiar Children."
I'd love to hear what other settings people would find interesting to try with this system. There's so much potential with it, that the opportunities seem endless!