"Alien 3" for NES is a video game based on the movie of the same name. The game is a side-scrolling action platformer in which the player controls the character of Ellen Ripley as she battles against the Xenomorphs.

The game is divided into several levels, each with its own unique challenges and enemies. Ripley can use a variety of weapons to fight off the Xenomorphs, including a flamethrower and a pulse rifle. The game also features puzzle-solving elements, requiring the player to navigate through the levels and find keycards to unlock doors.

One notable aspect of "Alien 3" for NES is its high difficulty level. The game is known for its unforgiving gameplay and limited number of lives and continues, which can make progress through the levels challenging.

Overall, "Alien 3" for NES is a challenging and action-packed game that will appeal to fans of the movie and fans of platformer games alike.