The provided article text consists only of PC Gamer's website navigation, membership prompts and menu links, with no actual report on Hytale's content preview included. As a result, there is no substantive information available to summarise about what the preview contains or why it was released.

To provide an accurate summary of this story—covering what Hytale showed in its 22 videos and 37 images and what it reveals about the game's development—the actual article body would need to be supplied, as the current text appears to be a failed or incomplete page fetch.