So you created your own POW blockchain only to have a cryptocurrency gamers can pay with and the magic sauce is the API. Is that a good summary?
If a game with 10 million users are using your API as a means of payment, shouldn't that result in extremely high tx volume on your blockchain? Is there a blockexplorer that shows that volume?
Whether due to marketing hype or not wanting to insult their partner, GameCredits is unlikely to point the following out. However:
Fragoria doesn't have remotely close to millions of players in any meaningful sense. It might have had millions of accounts once briefly trying it out but not sustained, not unless mere bots or something.
You can get a better idea of the actual active playerbase by looking at the amount of posting on their forum:
http://forum.fragoria.com/?langid=1For example, if one has ever been to the Blizzard WoW forums, there is no comparison, by literally orders of magnitude. The latter is what a game with millions of active players really means.
With that said, fortunately GameCredits doesn't depend on Fragoria, not in the long term. As long as GameCredits keeps up their continuous development, eventually they should reach other games summing up to millions of active users for real. (That will probably never include WoW, from what I know of developer concerns about pay-to-win and real-money-trading there, but GameCredits will reach more and more other games). And when they do, they might obtain more true usage than any altcoin has presently other than Bitcoin itself.
I am a holder of GameCredits myself. Despite a little annoyance at a somewhat premature marketing spin, it is a milder fault than those of most other altcoins, since few others have such a clear market niche or as solid continuing development.