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The game is shown entirely from an overhead perspective, as in traditional top-down shooters. The player must collect weapon upgrades and operate various machines to combat the alien enemies.
Various obstacles, such as pitfalls and land mines, must be avoided.[3] There is a boss battle at the end of each level, and sometimes mid-level as well. The player's progress in the game could be saved using a passwordsystem.[4] Between levels, images and text were sometimes displayed which showed Maverick's thoughts or reminiscence about his life.