If you want to upload your games on Kartridge, you will need to request developer access. To do this, follow these steps:
1) Open up Kartridge and click on your profile name.
2) Click Request Developer Access:
Fill out the form that pops up. If further verification is needed, the Kartridge developer support team will contact you directly via the email provided in the submission form.
If you have any questions about this process, contact email@example.com.