Unlock ALL Challenges: At the 'Main' menu press L, L, L, L, R, L, L, R, R, Up, Up, Up, Down, Down, Left, Up, Right, Down, Select. Unlock ALL Games: At the 'Main' menu press L, L, L, L, R, L, R, Left, Up, Right, Down, Left, Up, Right, Down, R, L, R, L, Select.