Stick Software today announced the release of Trisection 1.0, a new puzzle game for Mac OS X. Trisection follows in the grand tradition of Tetris, involving fitting falling pieces into an existing matrix. In Trisection, you’re matching up colors, not just completing rows, and unlike the square blocks of Tetris, Trisection uses a triangular grid and pieces, making it a much more interesting puzzle. Trisection is US$15 shareware.