As I replied in your email, I might as well post my answer here:
"I've already given premission for someone else to make a fangame based on the ideas on my maps. As I mentioned to them, I really think it would be better for you to come up with your own ideas. But as I don't intend to do anything more with this, as its purpose has been fulfilled, I guess there's no harm if you want to use some of the ideas from my maps, so long as you clearly credit VGMaps.com in there."
And, now, I don't want to be mean, but I'm not really a fan of fangames (seems ironic, I know), and from the half-dozen requests I've gotten from people to make a fangame out of this (of which I said to them it would be better if they came up with their OWN ideas), I would be willing to bet that most of them won't get anywhere near completion. If you can, kudos to you, but I just find that most of the time when fans set out to make a game it rarely actually materializes into anything.
Though I suppose I should be flattered that people think it could be made into a good fangame...