METROID

RRAAAWWWWWRRRRRRRRR.Im not afraid by this flying garbage can;i know i can destroy it.HISSSSSSSSSSSSSS.

far more menacing than its appearance, is what comes out of those cannons! (I've also dreamed of a robot that looked very much like this, but I was too scared to wait and face it in the dark, 4-bit labyrinth it was chasing me through... From what I sensed, I know that just ONE of these robots could single handedly win the war in Iraq AND Iran... the only problem is, there would be no people left! And it would probably turn around and destroy the United States Army as well!) But I'm a Dream Master now, I don't fear this floating garbage can anymore. ;)

Robo-Rally?

Saturn 7?

None of the above! Think of an older, more pre-historic game system... well, at least one from an age before Nintendo... eh, either way, it's so obscure I'm probably the only person to have played that "Intellivision" game... but it was a game that made you FEAR one, nasty, robot, that would stalk you through the whole level--around the screen--where the only strategy was to run screaming like a little girl until you could find enough ammunition to shoot the robot a few more times while it hunted you like a rat!

Ummm... how about.. Night Stalker?

Blast you! you figured out the name of the game! Wait, you used some obscure sort of clue to figure that one out, didn't you?
;)

*points up to the title of the submission*

Looks rusty, i like it.