Copying Dvd Tv Games

Has anyone managed to successfuly backup a Dvd game, one that is meant to be played on your Dvd player not a Pc or Ps2 etc.

Have backed up countless movies,but my backups of my Dvd games do not work. Use CloneDvd and Anydvd for my backups.

has anyone done this, or have any idea why i can’t.?

Sorted it, works fine with DVdshrink and Nero.