
Your billion-second birthday is hiding in your thirties
A billion sounds impossibly large. In seconds, it is a milestone you can reach in an ordinary lifetime.
Published 26 October 2026 · Sources included
Read this little wonder →Explore treasure charts, forgotten shipwrecks and remote islands. Compare the two illustrations and uncover every difference.
Your current puzzle and best results save on this device when browser storage is available.
Find changes to pictured objects, including changed coastlines, sails, ruins and explorer’s equipment. Tap either picture. A ring appears in both when you find one. Each ring marks one changed area. Incorrect taps are counted, with no time limit. Keyboard users can focus a pictured object and press Enter or Space.
Levels 1–3 have five differences, levels 4–6 have seven and later levels have nine. Six distinct expedition scenes include an archipelago chart, a beached shipwreck, a moonlit smugglers’ cove, a cartographer’s desk, a submerged wreck and a remote island. New expedition changes the entire scene. All six are used before the scene order reshuffles, with no immediate repeat.
Hint marks one remaining difference and is counted. Completing with hints still advances your level. Reveal shows every answer, but does not award completion or a best level; the next button then gives a fresh puzzle at the same level. Your highest completed level and current puzzle save on this device. On phones the pictures stack vertically for larger tap targets.
Little Wonder expedition artwork, created with AI assistance. These are fictional play scenes, not historical photographs or factual claims. No account or score uploads are required. Clearing browser storage removes saved progress. Starting a new puzzle replaces the current one.