From the back of the box:
In MASTERMIND® SECRET SEARCH you're trying to be the first player to guess your opponent's code.
To start, both players secretly write a word behind their shields. This is their code word. Then, on each turn, try to move in closer to your opponent's word--one letter at a time--while they're doing the same to you!
Includes 2 games consoles, wipe-off marker pen and scoring pegs.