how this works (if you weren't here the first time) is that you put the system you have, that system's FC, and a list of online games you have. for example: Switch FC: SW-1211-3591-2639 - Super Smash Bros. Ultimate - Mario Kart 8 Deluxe - Arms - Super Mario Party - Mario Maker 2 (soon, maybe) 3DS FC: 2638-5802-9208 - Legend of Zelda: Tri-Force Heroes i rarely use it, but add me and hmu if you want to play a game