Every x seconds (depending the level) a new line with colored bricks appears from the bottom of the screen and moves the whole field up. By clicking on a group of 3 or more same-colored bricks, the whole group disappears, and the hole is filled first by the elements falling from above. If a whole column is cleared, the elements slide to the center of the field. Black bombs have the additional quality of serving as a bridge between brick of the same color; if two or more bricks of the same color are touching a bomb, then clicking one of those bricks has the same effect of clicking on a group of three or more bricks of the same color.

Clean up the desk by clicking on groups of 3 or more stones of the same color. You get points for each deleted stone and row. Be quick, you play against time. If the level is too simple, skip it. Collapse! is a block-busting BLAST. It is much similar to the games like Big Money and related Games. It’s also quite possibly the most addictive game on the net, so be warned! All you have to do is match like-colored blocks in groups of three or more to disintegrate them before the columns hit the roof…because once they hit the roof, it’s all over! In higher levels of the game, "bombs" appear, mixed among the bricks. The bombs are either black (in which case clicking on them causes the surrounding section of bricks to disappear), or are the color of one of the groups of bricks (in which case clicking on the bomb eliminates all bricks on the board that are the same color). At regular intervals, rows of blocks pop up from the bottom of the game board. Click on adjacent groups of three or more blocks to score points. Game play continues until all rows are used up, as indicated on the right side of the game screen. You have three levels of game play to achieve the highest possible score, so move fast.

When you use a bomb to clear blocks, your score is calculated by taking the point value (see chart above) of the total number of blocks cleared and multiplying by 1/10th. There is also a “clear screen” bonus, meaning that if ALL of the blocks are cleared from the screen you get 1,000 points. The final bonus added to your score is a 100-point “end of level” bonus for each remaining empty horizontal row at the end of the level. This sum is then multiplied by the level of the puzzle.