The logic and rules are similar to other "falling blocks" games like Tetris (from The Tetris Company) and Columns (from Sega).
Even if you've never played any of those games, Downfall is very easy to learn.
Drop stacks of colored blocks to form lines that will react and disappear!
Norbyte Downfall v2.5.8 | 1,25 Mb
Downfall consists of over 30 different boards to play, with smooth 3D animations and endless replayability.
All the boards have special blocks like indestructibles, dynamite sticks, snow shovels, wrecking balls etc.
Keep in mind that each board requires its own tactics and skills to master!
Another handy feature is the import-export highscores function, which lets you swap highscores with your friends. When importing, Downfall merges the highscores together, keeping the best ones.
See more on developers site.