Human evolution is basically a time-lapse of us learning to walk better. First, we started on all fours, then we figured out how to balance on two legs, and eventually, we strutted our way to dominance. The same thing is happening with humanoid robots right now—except while some can move as well as we can, others are a bit further down the evolutionary tree.

The Apollo program was NASA's mission to put humans on the moon. Over 11 years, it achieved 6 lunar landings, and its success is deeply embedded in history and pop culture. But I bet there are a couple of things you didn’t know about it.

If you know where to look, you can watch full-length, real-world movies inside video games. Whether it would be a good viewing experience is up for debate, but at least now you know that if you somehow lose access to all streaming services and Blu-rays, you can boot up these games for some cinematic entertainment.

Game developers are a cheeky bunch. They have been known to hide everything from secret levels to full-length movies inside their games. Sometimes, they take things even further and bury fully-playable games inside other games.