> - New Zen Mode for Campaign: toggle "Normal / Zen" in the campaign menu to hide the timer, error count, challenge requirements and item counters, so you can focus purely on solving. Progress and scores are still recorded, and timed challenges automatically stay in Normal mode. A first-time intro explains the feature and can be dismissed permanently. > - Improved swipe painting: the stroke direction locks as soon as you start, so a slight finger drift no longer paints adjacent rows or columns (applies to Campaign, Open Play and Create). > - Reworked background music: menus and win/loss results are now silent; music adapts to your solving progress, calms down on undo, and mistakes no longer interrupt the music layers. > - Undo & hints: undoing a hint batch restores the board but no longer refunds the hint use, keeping hint stats consistent. > - Richer Open Play puzzles: two new generators (random walk and island growth) diversify puzzle patterns. > - Create Mode: the editor and library now follow the Night / Day theme, and the editor has a direct settings entry. > - Fixed the incorrect solution data of the "Butterfly" level in Chapter 4, which can now be completed normally. > - Other polish: achievement card layout and localization refinements.