Signal room · daily expedition

Meridian Cipher

How the daily chart works

Each UTC day opens five country marks (six with the Extra Mark upgrade). Read the parchment cipher, pick a country on the globe or from the list, and seal your guess. Score drops with centroid distance when you miss.

Reveal arc

After a sealed guess, a brass meridian grows from your pick toward the true country while the camera rides along. Use that beat to learn the miss, then move to the next mark.

Field tools

• Continent Cipher — names the continent
• Latitude Ink — hemisphere plus a coarse band drawn on the globe
• Spotlight — lights three candidates; one is correct
• Reshuffle — swaps in an alternate riddle for the same country
• Second Seal — one miss keeps the round open
• Wide Net — sets a score floor on distant misses
• Skip Mark — forfeit the round for zero points

Tips

• Burn Latitude Ink before Spotlight when the riddle feels coastal
• Wide Net is cheap insurance when you are torn between far continents
• Finish the expedition to bank ink for permanent chart-room upgrades
• Progress saves in this browser for today's UTC date key