Brix DS is a physic-based puzzle game. It’s quite simple: Use the stylus to remove all the gray blocks so that you can safely dispose of the bomb. To make the game more exciting there are different kinds of bricks for you to play with (there is a block description in the game).
If you can breeze through the first levels as if they were nothing, the final levels will definitely not be as easy. There are 73 levels, good luck stylus-ing your way out of all those bombs!