Maybe a good idea for you would be to have a few cards per system (like: SNES plaftormers, or Game Boy RPGs). Or even just 1 card per system: SNES card, Game Bo

Maybe a good idea for you would be to have a few cards per system (like: SNES plaftormers, or Game Boy RPGs). Or even just 1 card per system: SNES card, Game Boy card, etc. with the full catalogue. There would still be wasted space, but much more practical.