I notice that when I connect to pi via web browser
These get created

$cat /proc/bus/input/devices I: Bus=0006 Vendor=046d Product=c31c Version=0001 N: Name="virtual-keyboard" P: Phys= S: Sysfs=/devices/virtual/input/input2 U: Uniq= H: Handlers=sysrq kbd event0 B: PROP=0 B: EV=3 B: KEY=1ffffff ffefffff ffffffff fffffffe I: Bus=0014 Vendor=0079 Product=0006 Version=0001 N: Name="virtual-joystick" P: Phys= S: Sysfs=/devices/virtual/input/input3 U: Uniq= H: Handlers=event1 js0 B: PROP=0 B: EV=b B: KEY=f 0 0 0 0 0 0 0 7fff0000 0 0 0 0 0 0 0 0 0 B: ABS=1b

This leads me to think that connecting two gamepad to laptop and playing with them simultaneously (games like contra) may not be possible.

@diuk Yes mouse is working with scummvm