This prototype game pits the player against a series of waves of increasing difficulty, as they attempt to defend their base from aerial bombardment.

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Three different types of enemy each present their own challenge. Should the heavy hitting bombers be the primary target, or do the  light, agile fighter bombers pose just as much threat. The large, lumbering zeppelins carry the greatest threat, but deciding at what point they should become the primary target isn't easy to establish when under pressure. 

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Damaging aircraft may impede their progress, so one valid tactic is to spread the damage among all attackers early in the wave and then, one by one, pick them off.

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Between waves, the player has the opportunity to spend money on more ammunition, repairs for the base or increase their offensive capabilities by purchasing weapon upgrades.

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For completing waves quickly, the player is offered bonus cash as a reward which might pay for crucial upgrades.

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