Does this come with wifi on it?
No, for ASUS you need to find the ones with ASUS Wi-Fi GO! like the Z87-Pro or Deluxe.
Here are the Z87 boards on PCPP that have WiFi
The EXTREME comes with wifi but not the GENE. The GENE does have a mPCIe Combo II expansion card to plug an mPCIe wifi adapter into but you will have to get it separately.