If it is 'mobile phone' based I am a bit worried. What if 20 years down the road we want to play it, but mobile have been replaced with some other tech - or mobile interface - that will make the game obsolete or not work right down the road. I can play MB 15 years ago and 15 years from now. No issues.
So basing it on mobile tech will reduce the long term viability of the game.
"This is our concern dude"