In Within the Borders you have to collect the white glowing orbs without leaving the track. If you get out from the black line it will be game over. To turn you have to touch the screen at the right moment. Be careful, because every time you collect a new orb, the players moves faster and faster! arcade game,orb collecting,speed challenge,touch control,navigation game,reflex game,arcade,responsive game,fast pace,game over,white orbs,black line,mobile game,arcade challenge,timing,precision,skillful reflexes