Incoming is a tower-assisted shooter where players attempt to deflect incoming missiles into the wall or ceiling to school points. If the missile lands you lose a point.
A/W: Move cannon left or right
Space: Fire cannon
Hold number (1-6): Select corresponding tower (i.e. holding "1" selects the tower that was the farthest to the left at the beginning of the game)
Select tower and "+/-": Move selected tower right or left
R: Start or restart