Backyard Football 2008

Backyard Football 2008 cheat codes: 
Humongo Dome:
Win the Backyard Bowl to unlock the Humongo Dome.

The Castle:
Win the Backyard Bowl to unlock the The Castle.

Jason Taylor:
Get five sacks in a game with one player to unlock Jason Taylor.

Larry Johnson:
Get five rushing TDs in a game with one player to unlock Larry Johnson.

Vince Young:
Throw five TD passes in a game with one player to unlock Vince Young.

No catches:
While on defense, if the offense throws a far ball,
become the defender that is guarding the receiver.
Push or run into the receiver, and it will result in an incomplete pass.