The CD includes English, Spanish, French and German versions of the game as well. In Your Face Boggle and Space Boggle. Battle Boggle begins with no letters on the grid. Players take turns placing a single letter on the grid and then finding words. They can pass the turn to the next player at any time, but if they run out of time that's it.
Play continues around the board until all letters are placed and the final player is out of time.
I found it an interesting variant. Breakaway Boggle is played on a three dimensional cube rather than a grid. You select letters adjacent vertically as well as horizontally to create words. As you use a letter that cube is removed from the overall cube. The concept is a good one, but in practice it is nearly impossible to see all the cubes.