Hey mobile gamers. I do about 90% of my casual online gambling on my smartphone while standing in crowded subway cars during my morning commute. Because of this, game layout is everything to me. I absolutely despise games that force you into landscape mode or have microscopic buttons where you accidentally click the wrong thing and ruin your whole bet. I need something with a clean portrait layout, huge responsive inputs, and an interface that can be comfortably operated with just one thumb while holding onto a handrail with the other. Any solid recommendations for instant casino arcades with perfect mobile UI?