https://www.megalextoria.com/wordpress/index.php/2017/01/27/laser-invasion-nes/
Laser Invasion was released by Konami in 1991 for the NES. It is a first person action game that could be played with a standard NES controller but was really designed for Nintendo's Zapper light gun or Konami's LaserScope.
Laser Invasion features four missions. First comes Helicopter mode. Helicopter mode missions require the player to select to choose the type of missiles and other equipment. The player then must pilot the helicopter to a landing site, fighting off various enemies along the way.
After the player successfully lands the helicopter, they switch to Gun shooting mode. This plays similar to other light gun games like Operation Wolf where the player must shoot various enemies on their way to the base entrance with the screen automatically scrolling.
Assuming the player makes it to the base entrance, they switch to Maze mode. In this mode, the player explores underground tunnels from a first person point of view. Whenever the player encounters enemies, the game switches to gun shooting mode again until all enemies are defeated.
Like most light gun games from this era, this one isn't all that great. However, it does offer more variety than such games usually did. If you enjoy light gun games from Nintendo's 8-bit days, you should enjoy this one too.
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I have an NES, a light gun, standard brick controllers, and some turbo controllers. I need to see if I can fix the cartridge slot though.