What’s the best casino for playing one-handed on mobile? I hate having to flip my phone to landscape mode when I'm standing on the Tube or the bus. It’s just awkward.

For pure mobile usability, I’d recommend Duelz Casino The whole interface is designed specifically for portrait mode, so you never have to flip your screen. It’s incredibly slick and responsive on iOS and Android. I play it on my commute into London, and it’s the easiest app to use with one hand. Plus, the graphics look crisp without draining your battery in five minutes.