let's started with the tail's doll curse. The tail's doll curse is a game curse that's is activated by beating sonic r on saga dream cast or pc. The sonic gems collection for the gamecube had sonic r in it that was a suppose to be a safe copy, that was untill a doll found a roundabout way of getting out. This was by playing tag with super sonic and when the doll tags him, he steals all of his energy. It is interesting but to do more research seems to be dangerous. I will need someone who beat it 100% and played tails doll tag.
The next one is the crop circle binary. It's... well it is a binary code that appeared out side a research lab. When they found it, they found that a few years ago that someone at that lab had sent out binary of our genetics and information on our planet and solar system. What we got back was interesting and This is the image of there binary on the left. The image in the middle is also a picture of maybe an alien. There was also another binary code that appeared a year later in the same field near the same date. This binary contained a message and another picture. The picture Here, Shows that the message has something to do with the alien in the picture. The message in the Binary follows as such. "Beware the bearers of false gifts and their broken promises. Much pain but still time. Believe: there is good out there. We oppose deception. Conduit closing." As I was posting this I came across some information. I'll link the site. The hidden meanings of the crop circles.
Time travel... well I have not came across much information but I'll continue to look.
-kit nomara, over and out.