As a referee myself I thought I'd buy this DVD game to sharpen up my performances. The game works well in this respect, giving a fairly clear picture of the scene to allow you to make a decision.
My one criticism would be is that the game assumes the referee on the day is always right. Believe it or not, my colleagues and I do make some mistakes and it would be good if someone had reviewed the footage before releasing the game.
Aside from that, non-referees quickly get bored of the game - as they get most of the questions wrong (particularly those relating to specific items of Law).
Recommended for referees if it's at a good price...