Christmas Merge is a free merge game. This time only comes once a year and it doesn't last very long so when it is here you should probably make the most of it. That is right, we're talking about merge time, merge time is everyone's favorite time of the year when they stop to reflect upon numbers from 1-9 and how to merge adjacent numbers together in order to become those other numbers. Christmas Merge is kind of a puzzle game and kind of a math game. It is a little bit of both and in fact, you could even say that we merged the two in order to create this game. However, that is technically a different type of merging than what is happening in this game. In this game, you need to click on one tile in order to bring its number up by one and thus match at least two adjacent tiles.