Survival Run
Survival Run is a first-person space shooter published by Milton Bradley for the Atari 2600 in 1983. You fly a starfighter through a maze of tunnels deep inside an alien planet, shooting guards and force fields while you pick the right path on a map. It is one of only two games Milton Bradley released for the 2600, and it has a nice mix of shooting and route-finding. You can play it here in your browser.