Robot Chicken "advertisement" for Adventure.

https://www.youtube.com/watch?v=rNK44eqvP38

And of course, the "someone get this freakin duck away from me!"

https://www.youtube.com/watch?v=OOQDtZg0sCo

I found the easter egg in Adventure on my own, however, this was using the method of turning the 2600 power switch on and off really fast which caused the game to boot into a semi broken mode where one of those thin vertical black lines would be moved over, such that you could go under it. that's how I got into the room. I thought if I kept experimenting like this I'd find the source code for the game, but that didn't happen. learned about the dot some years later.

Play Atari 2600 Adventure online.

https://atarionline.org/atari-2600/adventure

This game is quite simple in how it uses the Atari 2600 hardware. Atari Hardware can draw exactly 6 thing on a scanline: Playfield, Ball, Sprite 1, Sprite 2, Missile 1, Missile 2. So Adventure made the player be the Ball, the thin walls (seen on two rooms) be the missile, and two of game objects become the two sprites. There is also the torch-light sprite that can take the place of one of the game objects in dark rooms, drawn behind the background.

The game makes no attempt at all to re-use a sprite slot for another sprite appearing further down the screen. It's just two sprites, then no more.

The game also uses the hardware's pixel-level collision detection to check for collisions rather than bounding boxes, so when the sprites are flickering, they cannot collide with the player. But collision detection is not the only way that objects can interact, there's also the Bat and Magnet, or the dragons having objects to guard/run away from. The bridge also makes the game ignore player collisions for a particular bounding box inside the bridge.

if you played adventure:

https://news.ycombinator.com/item?id=35571077