Jattack
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Jattack is a simple game based loosely on Tetris Attack for the Game
Boy.

Rather than falling from above, rows of pieces rise from below. You can
swap a piece with it's neighbour on the same horizontal line. If you
create a run of 3 identical pieces, they're removed from the board.

As time goes on, the game moves faster. The aim is to survive as long
as possible.
