The Dutch game association Ducosim publishes the game magazine Spel!. With this magazine they will publish several 'Spel!enkaarten' (gamecards). These are games which fit on a A5 card. #0028 is Het Kerstboom-Ballen-Memo-Spel. This is a memory variant played on a Christmas tree shaped board. Each turn, a player slides one Christmas ball as far as it goes in one direction, and then flips it and an adjacent ball open to reveal their colors. If they match, the player scores both. Whomever collects most balls wins the game. —user summary