Tic Tac Toe Tum

This is my first app, so the quality of the art is potato, but hey, it'll take up as little space on your phone as possible. It's like the classic Tic Tac Toe, but with a little extra complexity. Instead of a 3x3 grid, it's 4x4. Be the first to get four marks in a row, or in a box, or in the four corners of the grid. In the event of a stalemate, whoever gets the most threes in a row resolves it. Even then there can still be a stalemate.