4 square tic tac toe

We've learned a new game at our house.  It's 4-square tic tac toe. There's more strategy and planning than with regular tic tac toe and we are really into it. 

Instead of working with a 3x3 grid, you have a 4x4.  You are still using two players; X and O.  Play is like regular tic tac toe except that players can win three ways:  4 corners, 4 in a square (anywhere on the board) or 4 in a row (vertical, horizontal, diagonal). 

You want to play now don't you?   Watch out for my kids though, they are good!   When no one wins and it's a draw Lou and Bee have been calling it 'cat's eye'  which makes my giggle.