I've been using Monkey2 for a while. It's not a game I'm making just now in fact, but an editor for the objects I've used to make a couple of small Android games. It's all a bit wonky, but I'm a total amateur and I'm pretty pleased with the way it's going. My main goal is to have it output M2 code that I can use. The games I've made have been super simple, sort of as a result of not having something like this to arrange all my graphics and physics things. I've got absolutely tons to do, but here are small vids of me playing with some of the recently added parts of it.