I doubt it. You've already "bought in" and agreed to their terms. They have you by the contractual balls at that point. The fact that your game is exceedingly p

I doubt it. You've already "bought in" and agreed to their terms. They have you by the contractual balls at that point. The fact that your game is exceedingly popular and raking in cash makes the contract you've already agreed to worth more, not less. You'd have to find something that they would think was a better deal. Like "I pay you lump sum $X in exchange for no more royalty payments. At which point, it becomes a gamble for both sides. You have a much better chance of negotiating something like that before your game even begins development. Expect to spend a metric ton of cash on that license deal, however.