What? A clone of the popular puzzle game bejewelled which can be played using only one button.
Why? Severely physically disabled players, such as quadriplegics or players missing limbs, have a hard time interacting which puzzle games which usually requires the mouse.
How? We developed two different scan mechanisms:
column - row selection; based upon existing scan mechanisms. Player selects a row and then a column to select a gem
rotate & extend - an alternative to column - row selection. Player first determines an angle and then a distance to select a gem
center - after a gem has been selected we scan over each one of its four or less neighbours to swap the selected gem with that particular neighbour