Short description of Downfall (for Mac OS X) 2.8.9: 3D arcade puzzle game (similar to Bloxter and other falling-blocks games).
It features real-time 3D graphics and lots of different boards to play.
All boards have special blocks like dynamite sticks, snow shovels, wrecking balls etc.
The game is easy to learn. You just drop stacks with colored blocks to form lines that will react and disappear, to score points.