Hi! 😊
Thanks a lot for your message and your interest in my assets — your project looks really cool and I love the idea of a no-code platformer tool!
I'm totally fine with you using my backgrounds as default assets in Pocket Platformer, especially since the tool is currently free and has a limited user base.
However, if the project evolves into a paid version or reaches a significantly larger audience in the future, I would kindly ask you to consider purchasing an extended license to reflect that broader usage.
Thank you for taking the time to ask for permission, and I wish you lots of success with your project!