You pilot an arrowhead-shaped vessel at the bottom of the screen, facing off against four different types of enemies. Certain enemies drop 'space soldiers' when shot, if these make it to the bottom of the screen, they will try to 'spear' your ship from behind.
There are two ways to lose. The primary and most familiar is to exhaust ships, but the player guards ranks of blocks which are stolen and placed to spell the words "The End". The game is over when this happens.
Crossword Puzzle allows the player to create his or her own crossword puzzles. All the player has to do is enter words for the puzzle and descriptions, once finished the computer will try to fit them all in a grid. The player can cycle through various viable options, but the computer might not always be able to put every word in the grid. Once done the editor will print the crossword to paper for someone else to solve.