So you want to play PS2, Wii, and Xbox360 games? Very ambitious =P ok if you're pro enough at soldering I would suggest you use a PS2 and Xbox360 PCB
http://slagcoin.com/joystick/pcb_wiring.html
read the bottom of that article it talks about multiple PCBs. Afterwards what you do is buy a Wii adapter like this one or any other if you can find it cheaper
http://www.consolesource.com/ecomm/catalog/Magic-Path-PS2-Controller-Adapter-For-Wii-p-2627.html
If you can afford it and don't want the headache of multiple PCBs you can use just the PS2 PCB and connect to 360 via a XFPS360 adapter but they go for around 60-80 dollars. At the same time a 360 PCB is around 40 dollars though, unless you have some broken controllers.








