TetroBOOM!

TetroBOOM! is a Tetris variant (no falling blocks).

The goal is to assemble groups of multicolored blocks together. It's a mouse-controlled game: the left mouse button is used to arrange and place the blocks, the right button rotates them. Once four blocks of the same color are together, those blocks explode.

Released as a downloadable shareware, TetroBOOM! was also available from retail CD-ROM compilations by Hemming AG such as Tetrix Classics.