Just like in the first Four Corners, the object of the game is to make rectangles where all four corners are the same color.
But this time, instead of a clock ticking down, you're trying to fill your square counter before SAM-Y does!
Move the selection markers around the board in navigation mode, or expand the markers while in selection mode.
The square counters are the 4x4 grids on the right side of the screen. Each empty space represents 100 tiles (50 when playing against a friend), and the bar beneath represents how far you need to go to fill another.
Whoever fills all 16 empty spaces first is the winner!
Some tiles will have bonuses attached to them. For a bonus to count, it must be in one of the corners of your match. Bonus tiles stack! For example, two quad clears is an 8x clear.
Doubles the number of tiles in your clear.
Quadruples the number of tiles in your clear.
Reduces the number of colors on the grid. Grants an extra turn.
Steals the number of tiles in your clear from your opponent and gives them to you.