About 12 years ago or so, I played a game on my uncles 2600. All I can remember is a black background and that I had to run across the screen while jumping over some projectiles that would come toward me intermittently. I was young at the time so I can't remember all the details but I believe I had to run to some type of building / castle.
Although I have a 2600, my library of games is quite small and I haven’t run into the game I'm thinking of. I should also mention my uncle had a European vcs and I believe a multicart because I could vaguely remember him scrolling through numbers to get to the game he wanted.