The very first video game commercial ever

[A Black Falcon]

The video description says that the video was made for showing in stores, so yeah, it wasn't a TV ad. It's great stuff though!

I do have to say this. It is hard to see the Odyssey as a true console. It was the first home video game system, but it didn't have a CPU. All the cartridges did was slightly alter the behavior of the glowing dots. For the most part, those dots were done internally. I will give it credit for that light gun though. While it was still using the system's built in game code with a slight alteration, it actually was still a functional light gun. It is a piece of history, but it wasn't until the Atari 2600 that we got a true turing complete CPU that do any behavior the system had memory to support.

No, the Fairchild Channel F was actually the first console with removable rom cartridges. The 2600 released after it. And while you're right that you can debate whether the Oddysey "counts" as a true console, it is the first video game system, period, and it has different games which each use different cards. Yes, all they do is change the alignment of the internal hardware, they're just pins and not rom carts, but it's an obvious predecessor to rom cartridges, and it's something more than most systems between the O2 and 2600 had, all those home Pong machines which can just play the games that are built into the units and no others.