A version of the board game Stratego
In this version of the classic board game Stratego you lead your troops into battle against the computer opponent in a race to capture your enemy's flag. Initially you can't see how the enemy has positioned his troops and he can't see yours which gives ample opportunity for bluffing and deception from both sides.
You can play with the standard rules or change any of the various rule options to suit your play. The Artificial Intelligence of the various computer controlled opponents is very strong so you'll have to fight deviously to win!