You're welcome! Yeah, feel free to use it in your game, would love to see it when it's done!
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Phew, the game is finally up on Steam: https://store.steampowered.com/app/3087810/Recesses/
It's not officially released yet, but the card playmats in the trailer and screenshots use space backgrounds that are randomly generated in-game. Let me know if you'd like a key to the game, and huge thanks again!