Galactic Gems is the pioneer free online jewel game in the series, and it is a challenging game because you only have a number of moves to make before the game shuts down. In order to move up the levels, you need to clear all the backgrounds that are behind the gems. In order to remove the background, you have to remove the gem. To remove a gem, you have to match three or more similar gems. However, there are special gems which remove many gems at once without having to be in a matching set. The bomb will remove gems in the same column and row, forming an L-shape. A gem with the symbol 03 on its face will remove 9 gems in a 3X3 grid. A gem that has a stripe on its face removes all the gems in the same row. You may also core a lot of marks when you make combo matches; these occur when the gems which fall in to replace those that have been removed, for another set. This can go on several times, and each multiplies the score. For example, the first combo doubles the score for the gems it has removed; the second triples it, and so on. However, in this case, it can be counterproductive to have these combos. Remember that you will not move on to the next level if you have not removed all the backgrounds and each gem removed will fill up the time indicator on the left of the game; when it gets to the top, the level comes to an end. This means that a combo, which will remove gems which fall into cells with no background, will give you more points, but it will not bring you any closer to finishing the level; you have to have a strategy in order to succeed.