Re: does the wii console include games? is it auto-voltage, can be used for 110 or 220 volts?

We bought a Wii for our son in the US last Christmas.  We’re now back in the Philippines, which uses 220 volts.  What’s the best thing to do:

a) use an Automatic Voltage Regulator (AVR)? 

b) use a transformer?

c) have the console converted from 110 v to 220 v?

Kindly advise.  Thanks.