UPWORDS is the 3-dimensional word game that's stacks of fun. Build words across and down crossword style on the 10 x 10 grid. Or stack letters on top of tiles already on the board. The challenge is to make new words each time. With 100 tiles, you can stack lots of letters to score high! So rack 'em up, then stack 'em up to experience 3-dimensional word play at its very best!