The goal of the game is to create a square letter grid, in which every row across and every column down spells a valid English word. For example, this would be a legal 3x3 grid:
C A T
E R A
L E T
The validity of words will be based on the Scrabble/Words With Friends dictionary (so no proper nouns or abbreviations, etc.). You can use the validator on the right-hand side of this page to check whether a word is legal or not.
Can you do a 4x4 grid? 5x5?
Whoever can construct the biggest grid wins. In the event of a tie, the winner will be determined by assigning a point value to each letter, also in accordance with Scrabble rules (I assume most people here are familiar with this system but if you’re not, essentially the more obscure letters like Z and J are worth more points than common letters). All values in the grid are added up and the one with the higher sum wins.