>>12037491
Basically, the everdrive is a sd cart based cartridge. You still play it on a standard system. However, the program is run off of an sd card. you put all the rom files of the games you want on the SD and then stick that into the everdrive. They've made master system, 64, super nintendo, and genesis (or megadrive for you yuropoors)
It seems like a neat idea, but they're expensive as fuck. Just the board is usually 100+ and they charge you for every little addon like a USB port, bigger SD, different case, different chip (for region encoding) and all kinds of shit. Pic related, base price on this is about 160 USD.