So I've been thinking, what if you could make a mobile game in Scratch? There have been a few attempts at porting the Scratch engine to other platforms by fans so, I decided to go with an HTML5 based engine named Sulfurous.
I didn't want to use just any game to test out so I took Griffpatch's 3D City Game and gave it on-screen buttons.
The resulting mess can be seen down below (it's using the Sulfurous Engine which has a few performance issues and a few odd glitches). Try not to go into fullscreen as that causes all sorts of performance issues.
If you just want to check out the code or are not on a phone, then you can use this link.