Might want to check out GroupIt!, a set-like game I recently released for Android, which works on both phones/tablets and supports portrait/landscape modes along with several other features.
I'm working on that! Have you tried rotating your phone to landscape mode? This is how it appears for me; I think it's quite playable. https://i.imgur.com/cNUxl2U.png
It's on my todo list to give portrait-mode mobile users a prompt to rotate their phones :)
