Thanks and great question.
We did use fgl. Everything up until the part where we had to find a sponsor went well. When we put it up for bid we had to wait about 2 weeks, if I remember correctly, to get a decent bid. Now here's where the problems arose. While we weren't naive enough to accept a deal in which we had to give him the game first and get the money later we were naive enough to accept a deal in which we had to wait 3 weeks before we could actually end the deal, because he didn't have the money on him at that time. You might say to yourself "hey 3 weeks is not that long of a period now is it?". The thing is that one of us was in a very bad economical situation, and those around him got really sick of his "game money making thing" that he had going on for far too long, and it was understandable as to why that was. Also the biggest problem with this 3 weeks waiting period is that the sponsor told us about it right after accepting the bid. You could say that we were deceived even. It was such a low blow and we didn't expect it. Oh and that's just the beginning. The 3 weeks waiting period turned in to a nightmare of a 1 month and 2 weeks waiting period, time in which the sponsor rarely and I mean RARELY answered our emails, time in which we actually tried finding other sponsors but to no avail and time in which we actually lost all hope of the game ever seeing the light of day. It was so hopeless that one of the developers, the one that I told you about earlier, started working in constructions, for a short amount of time what's true. Man was that a nerve wrecking, heart breaking, dream destroying experience. We got a little sample of how bad things taste in life you could say. Now lets get on to the good stuff. At last, after 1 month and 2 weeks had passed the sponsor contacted us saying that he got the money... but not all of it... "you said you were getting to the good stuff, this is not good stuff" you might be telling your self. You would be kind right, but the sponsor did give us the entire payment but split in 2 parts, the second part being received right next week after the first one.
The following, while part of the experience, has little to teach you about the game sponsoring business, but i really really want to talk about it. If you are interested in the human aspect of the outcome please read on. After all that has been said and done we went to the bank and withdrew the money. Now before I get into what I want to get into let me give you a little flashback to this story. When we began making the game we would always dream of how's it going to be when we got rewarded for all our hard work, "it's gonna be awesome" we said, "it's gonna be amazing"... "it's gonna be crazy" and almost crazy it was. Now here I was, holding my rightfully earned stack of plastic sheet like things... looked at it for quite a while... studding it like... and I felt empty. Questions like "was all that hell that I wen't through worth it?", "did I really have to get on the nerves of those close to me for this?" started popping in my head. After that, I kind of shook the feeling off, grabbed my dev buds and went to buy presents for those that put up with our crap for this entire time. That was the best decision I made in all of this, not the decision to make better tutorials, not the decision to add more levels, not any other developmental decision that made the game better and let me tell you why. As developers we pride ourselves with making clever little things that make our players feel rewarded for their hard work, that glittering coin, that awesome treasure, that pat on the back at the end of the level. If we pride ourselves with that then we better make sure to reward those without which we wouldn't be able to be developers. That is one of our main philosophies. So yea, that might not resonate with everyone seeing as how were all from different countries and cultures but I really wanted to get that out there,
Now were working on our next game, a retro platformer.
Anyway thanks for reading and for the question!
P.S. This was a somewhat unfortunate experience and I don't think that all of fgl's customers are like that.