Amber Archive: 140 new word sort puzzles

Puzzles 501 to 640 form a new chapter, Amber Archive. The rules stay the same — five tubes, pour letters, spell every word — but the words are rarer and the pour paths are longer. Amber Archive opens after puzzle 500, and your progress on puzzles 1 to 500 is unchanged. The same update makes letters larger on phones and tablets, starts the game faster, and makes hints follow a real solving path, so a stuck board is easier to rescue.