Blaster Master

Blaster Master is a video game released by Sunsoft for the NES. It is a localized version of a Japanese Famicom game titled "Chô Wakusei Senki Metafight", which was released on June 17, 1988. The game was released in North America in November 1988 and in Europe on April 25, 1991. The game is the first in the Blaster Master series.

Original description:

The New York sewers were never like this! You've fallen down a hidden manhole into a world of creatures so terrifying they'd scare the rats away. You can panic and perish, or blast your way through an endless maze of tunnels, searching for the secret passages to your escape. And, that's the easy part. Because the Masters of the Caverns lay waiting - prehistoric creatures so powerful, so gigantic, they literally fill your screen! So load your arsenal and get ready for Blaster Master.

Instructions

Enter - start (pause);    Arrows - move;    Z - jump;    X - shoot;    Esc = exit fullscreen;

You can change keyboard settings, save (F5) and load (F8) the game.
Put your mouse over the game and choose your settings, you can also play the game in fullscreen.