Hidden Gems on the Atari 2600

[nosweargamer]

Do you have any favorite hidden gems on the 2600?
Favorite games that may have been overlooked due to their rarity, obscurity, release date or for other reasons?
Here's my current top ten hidden gems on the system. Feel free to share your favorite hidden gems below!

[TrekMD]

Just watched this.  I'd agree that is a nice set of games. I love Stargate!  I have it and it is just such an upgrade when compared to the original Defender we saw released for the 2600.  Heck, it's hard to believe it is the same console!