Source: https://bsky.app/profile/crazyopticalillusions.net/post/3mbd4bjis2m27 For better result, right click and loop the video.

stolen: https://www.reddit.com/r/badUIbattles/comments/1gfvrm6/thank_you_udefcon_penguin_for_this_brilliant_idea/

The video description contains a link to a cross-eye version, which I find easier to watch.

Hidden image doesn't change sadly

Background is from one of the stars in game.

https://piped.video/watch?v=a0QBsZxchfU