What mobile app or game to make next?

A Million-Download App I want to make another million download hit. In fact, I want to make that every time I release an app. But I know (and have faced) reality, and there are times I release simple, life-lacking mobile games. These are more for my satisfaction that I have completed another one. Sometimes too, these come out of a challenge for myself. I recently tried making a pinball game in Unity3D. It is published, with a modified and simplified gameplay. And it took just a day to do it. Ketchapp be the inspiration! You never know when your release will be a hit , eh? Flappy bird probably best falls into this category. The Secret to Mobile App Success This really is a secret to mobile app success. Maybe not each and every app, but eventual apps. So I sat down today, and tried to list out where I've been successful. I guess one of the mantras of successful people is, "do more of what works " . My list went with the usual suspects. Golf games, s