UNSOLICITED FACT: Mario Kart World secretly supports multiplayer over LAN, which you can access by pressing both bumpers and the left stick on the main menu. While local wireless play can only support 8 systems, and therefore a maximum of 16 players, local LAN play can support an unlimited quantity of systems, or as many as your router can physically accommodate.
same with MK8DX, and possibly MK8? iād have to check that tho
doesnt seem to be a thing on MK8 (tried it on my wii u)