[serf]

sd card contact wear is pretty radical on constant insert/removal.

second: one of the things that made cartridges great was that they were human-sized. as were CDs. An sd card inserted into a more handle-able/human 'cartridge' would be cool, maybe gameboy sized was about perfect imo.

fiddling with sd cards and slots isn't great.

an snes/genesis cartridge falls into the thing, you can't miss or do it backwards without reeally trying to. They give an affirmative 'clunk' when fully engaged.

(also the contact wear on those was horrendous too.. maybe the SD card IS authentic..)

[darkwater]

An SD card is not that different from what the Switch uses, at least size wise. Use micro-SD for the actual data and a cheap SD adapter with a full size SD slot and contact wear should be an easily solvable issue.

[sankao]

Also solves the wear and tear issue.

[Dead_Lemon]

Replicating something like a form factor of a Gameboy cart is a cool idea, you could probably get away with a I2C EEEPROM of a size large enough for a single rom.