From the page:
Can you crack the code?
Feeling lucky, codebreakers? Think you’ve intercepted and decoded a secret Xi’an communique? Enter it below and find out. Diligent code breakers will earn the Alien Week 2954 Challenge Coin as a reward for their keen eye to detail.
Works by visiting with any web browser, and also with the Voyager app…
Which app are you using?
The spoiler should say: “The upper left corner of the image with food.”
Using boost for Lemmy. I don’t think I’ve used the browser version. I’m sure it works fine for others. Just not for me/Boost!