If you liked Minefold, I'm working on a service called Pickaxe (http://get.pickaxe.io) that's in a similar vein. It's not up and running yet, BUT you can still register to be eligible to beta-test it (for free) when it's available.
Thanks for the well wishes. At this point I'm married to Cocos2d. It offers just enough of what I need and it's free.
I've dabbled in Unity a little bit and was impressed at what it had to offer. But it seems like more than I'll ever need for what I can imagine doing in the short term.