25 December

Merging numbers has never felt quite this festive. 25 December takes the familiar sliding-tile puzzle format and wraps it around a holiday countdown, where players combine matching dates on a grid to climb toward Christmas Day. The satisfaction of watching two matching tiles collide and jump forward keeps each session surprisingly engaging.

Strategy matters more than speed here. The board fills quickly, and poor planning leaves you boxed in with no valid merges left. A handful of Shuffle and Regroup options offer a lifeline when things get tight, but they're limited, so spending them carelessly can cost you. Deciding when to hold back and when to act is where the real tension lives.

It's a calm but mentally demanding experience — the kind of puzzle that pulls you in for one more attempt without ever feeling frantic. Whether you reach December 25th or fall just short, the urge to try again is hard to resist.