In Gravity Gems , your objective is to remove rows of at least five blocks
(gems) of the same color, while avoiding the complete filling of the board.

The board of this game consists of 9 by 9 rows, which looks like a rhombus
drawn from a top-down view. However, it is actually that you look from the
side to it, so there is literally a lower and an upper part of the board. And
that’s where the Gravity from Gravity Gems comes into play, as gems are
falling down in direction of the lower part when gems beneath it are removed.

The game offers the player four different game modes: Time Gems, Classic Gems,
Tactical Gems, and Puzzle Gems.

In Classic Gems, you start with a half filled board (obviously, due to the
gravity, the lower part is filled). Now you are giving a gems, which you must
insert in any of the 18 possible places (lower left or lower right side, 9 at
each side). When you insert the gem, all gems in the diagonal line above it
will move one place up and the top gem might fall down in the other diagonal
line, if there is a free space beneath it in this direction. As soon as five
gems of the same color are together in a line, they will vanish. The amount of
new gems is unlimited, but as soon as the entire board is filled, you have
lost.

The mode is divided into levels, but you will always play the the same board.
At some levels, you will get more colored gems, making the game more
difficult. But you will also get special items, both good and bad, like the
blocker (which is useless, but it hinders you), the grenade (which destroys
all gems of the same color in the board as the one were it explodes), the
rainbow gem (which functions as a wild card, working as any color), and
others.

Time Gems is like Classic, but you play against the clock (besides against the
board filling), whereby Classic is without a time limit. There is a time meter
in the game, which will sink slowly. But you can rise it by exploding gems.
Once it falls to the bottom, you have lost.

In Tactical Gems, you play as in Classic, but with one major difference. In
Classic, you can explode any color combination at any time, but here you have
to explode a certain color, which is shown upper right of the board. When you
have created for example a 6 gems yellow row while your mission was to destroy
red rows, those yellow rows will stay until you are allowed to destroy yellow
and you attach another gem to this particularly row.

Now Puzzle Gems is totally different. You have a certain given board, which is
filled with a certain pattern. Now you are giving only a few gems and/or
special item and you must remove all gems from the board with those limited
things. If even just one gem remain on the board, you have failed and have to
retry the level.

Gravity Gems