Area 51½ is a secret field in Backyard Soccer that's available for use in pick-up games and penalty kick practices. It is a dirt field that is in the middle of a government airfield, which itself is in the middle of a desert. As its name suggests, it is a parody of the real Area 51.
The only known way to access this field is by editing the hegames.ini file. Under
Oddly, the background noise is the same as the Pro Sports Arena's (large crowds being heard cheering on the teams) even though there is nobody watching the teams play.