If the word “beat” quickly leads you to "tab," "bat," "ate," "bet," "tea," and "eat," you’ll probably do just fine at Writer Rumble for iPhone and iPad. Proving the pen is mightier than the sword, combatants in Writer Rumble duel not with fireballs, but word tiles. Dragging your finger across the grid of letters to spell words creates not only terminology but also projectiles, which are flung at the opponent to cause damage. The longer and more complicated the word, the more powerful the attack. Think Boggle, but more violent.