Donkey Kong - Atari 2600 (1982)
Published by: Coleco
With only 2 levels, and some seriously downgraded graphics, this is not a fondly remembered port. It was created by Coleco, who purchased the rights from Nintendo, and then released a version of Donkey Kong for their own console - the ColecoVision. Not long after that, they published this version for (by then) underpowered Atari 2600. Rumour has it that this version was purposefully made poorly, as Coleco wanted to push sales of their superior version on the ColecoVision.