Game rules

The game consists of defending the nuke against incoming hostile robots which are spawned on the top of the screen. The players control their own robots spawning next to the nuke and are able to move and fire bullets. They can also collect bonuses which aid them during the battle (enemies also can collect but only on highest difficulty). The first player controls the yellow robot and the second controls the green one. For defeating enemies and collecting bonuses, the player gains points. If the player wins the game, they advance to the next stage. Otherwise, the game is over.

Entire gameplay is in the stage scene.

Win condition

The player won the game if all the following conditions are met:

1. All enemies are defeated,
2. The nuke is not destroyed,
3. At least one active player is still alive.

Lose condition

The player loses the game if any of the following conditions is met:

1. The nuke is destroyed,
2. All active players are destroyed and lost all lives.