Okay this is probably the nerdiest Game Boy Advance question I've ever asked 🤓:

I know that Super Mario Advance 4 (Mario Bros. 3 on the NES) has some extra levels that are only available if you own the e-Reader.

I own a copy of SMA4 and I would like to get those levels onto it. Obviously, I don't own the cards. What's the best way?

I found this, but I don't have a link cable. But I do own an Analogue Pocket. Maybe through sharing a memory state?

#gameboyadvance

https://github.com/mattieb/4-e