The bundle is hosted directly on itch.io using our Co-op bundle system.
https://itch.io/docs/creators/bundles
You don’t need to do anything other than consent to your project to be part of the bundle.
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Unfortunately due to the size of the bundle we won’t be going through and playing all the submissions. We’ll be looking at signals like on site ratings and payments already collected on the pages. Since this bundle is hosted by itch staff, if we need to verify the contents of a submission we can do that without any assistance from the creator.