No joystick plugged in, still "testing" and getting familiar to Rasp and PiPlay, creating a MAME machine with chinese zero latency joysticks (still in transit).
Got problem when decompressing both vice and sdl2 during installer script.
If I remove the keyboard/mouse and re-plug it with PiPlay menu opened, problem is solved.
Looking for pre-comp vice and sdl2 packs but can still no luck, yet I do not believe this 2 are the actual problem.