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Brikks can be viewed as tabletop Tetris, with each player attempting to place falling blocks into their grid to score the most points.
To begin the game, each player draws a different quadromino at the bottom of their individual game sheet. On a turn, the active player rolls two dice — a colored d6 and a numbered d4 — then optionally may rolls both dice again. The two dice determine the specific quadromino — that is, which colored shape and in which orientation — all players must "drop" into their grid. To represent this, you draw an outline of the block at the bottom of your page as if you had dropped it in from the top, then X out the spaces covered by the quadromino.
If you cover a circle on the grid that's the same color as the quadromino just placed there, you gain two energy points. By spending one energy point on a turn, you may "rotate" the quadromino to be placed depending on what dice were rolled; by spending five energy points, you can place the exact quadromino you want, ignoring the result of the dice. As you obtain energy, you might cover an X on the energy chart; if you do, you track these Xs on a separate "extra point" bar, with the points escalating for each X you collect. If you complete 2-4 lines through the placement of a single quadromino, you obtain an additional 1-4 Xs for this extra point bar.
Every player has three bombs they can spend to blow up a block instead of placing it, but by doing so you give up endgame points.
As soon as you are unable to place a quadromino in your grid, your game is over. Once everyone has filled their grid to the top, tally the points. In addition to the extra points bar and any unused bombs, you score 1-5 points for each horizontal line that contains 8-10 Xs, with these line points doubling, or even quadrupling, as you go higher in the grid. Whoever scores the most points wins the game!
"Brikks" also comes with rules for a duel mode and a solitaire mode.