Drop7 is not your typical match 3 puzzle game, where you attempt to line up and match objects of the same color or symbol. Rather, numbered discs disappear whenever its digit matches the number of discs in its current row or column. Once you get used to this sudoku like concept, the game becomes extremely addictive. Truth be told, it did take me a little time from the get go to play the game effectively. I suppose after years of Bejeweled and Super Street Fighter Puzzle II, my first reaction was to instinctively match together balls/discs of the same color.
Adding to the mix are gray discs that drop or rise from the bottom of the board (a single row rises at the end of each round). Underneath these gray discs are numbered discs, which are broken down whenever an adjacent discs disappear. Like an egg, it takes two cracks before the numbered disc appears. This simple but brilliantly implemented “obstacle” makes for a much more interesting and challenging game, not to mention loads of player strategies. The game is played until the discs in play are “pushed” or stacked above the playing field, which are the black grids.