I’ve made a very simple but quite hard one-touch “Flappy” kind of game!
It’s called ‘JUMPiX’ and the point is to navigate a little ‘pix’ through an endless world of triangular shapes!

Its totally free and out on both AppStore & Google Play!
Here are the links:

https://itunes.apple.com/us/app/jumpix/id1294853644?l=sv&ls=1&mt=8

https://play.google.com/store/apps/details?id=com.companyname.JUMPiX&hl=en