Generally speaking, crowdfunding revenue is considered royalty bearing revenue to the extent that the money gets the user access to the game or some other in-game benefit. To the extent it gets you a thank-you, shirt, soundtrack, poster, etc., it’s not royalty-bearing.
In your case, this is basically a game pre-order, so it’s revenue for your game that’s subject to a royalty even though the game doesn’t come out right away.