Considering the limited budget they had available, they did a decent job. I think the opening credits are downright elegant in their clean simplicity and Kronos itself is a beautiful Art Deco menace.

Of course, the science is ridiculous. Power planets CREATE power, they don't contain power. Getting energy by sucking it from a power plant is like getting shoes by sucking them from a cobbler!

Also, I still wonder, since the walking pistons on Kronos only go up and down, how did it get any forward motion? Wouldn't it have just eventually drilled itself a nice hole in the ground and disappeared from view?

One bit of trivia. In the role of the handsome scientist's funny sidekick is George O'Hanlon, later the voice of the cartoon's George Jetson, playing one of his few live action roles. Every time you hear him talking about the danger Kronos poses to mankind in that distinctive voice, you expect him to suddenly shout out, "Jane, stop this crazy thing!"