You need three things:
Highly recommended; requires firmware 2.18.0 for stable data saving. Emulators: RetroArch: Must use a core that supports ROMs over 64MB. wwf no mercy plus v3 beta 1091724 download patreon verified
: For the first time, players can grab tables (by holding C-up when selecting a weapon) and perform moves through them. You need three things: Highly recommended; requires firmware