Hey i have just posted my game to the play store and i would be happy if you would check it out and tell me what do you think 
The game called Expand and it is very simple, you need to move your circle to avoid the obstacled but at the same time the walls 
are closing down on you so whenever the Expand button appears you need to take it to open the walls!
Hope you would like it.
https://play.google.com/store/apps/details?id=com.expand.game

It looks like fun! Gonna give it a try here soon.