MA DI (which costs a rocket attack and defense) - is an arcade game somewhat similar to Missile Command. You control the photon cannon at the bottom of the screen, and your goal is to protect six power stations located on the left and the right. Waves of missiles and ships will fly across the screen, and occasionally one of them will fall in an attempt to destroy one of the stations (as a warning on most levels, the enemy will turn white just before it falls). You must make sure you remove it before your energy station will be destroyed! When all six power plants are gone, the game ends. There are two variation Player; One player will control the photon cannon, and the other player controls the cursor and can choose when and where the enemy falls. Players alternate between offense and defense in this version.