Skullgirls Encore for PS4 supports PS3 arcade sticks — why that's good news for everyone - Polygon
Amazon.com: CHENGDAO Controller for PS3 2 Pack Wireless Controller for Playstaion 3 6-Axis with High-Performance Double Shock, Motion Control, USB Charging Cable (Skull + Galaxy) : Video Games
Skullgirls - Wikipedia
Skullgirls for PS3 (PSN): Story Mode Trailer - YouTube
Skullgirls 2nd Encore | Skullgirls Wiki | Fandom
Skullgirls Encore Developer Creates PS3 to PS4 Controller Drivers