when in the special zone collect the balls, speccially the star balls because they give a boost when u press in a button (don't remember). try to avoid the spike balls because they hurt and make u stop. when appears two chaos (1 black and 1 blue) collect the balls they throw, be careful whit the spike balls that they throw sometimes. This special zones gives u 1ups
when u find the emerald, umust sprint the fast as u can and collect the colored balls until u reach the emerald. If the emerald gets to the end before u get it the emerald will disappear and u return to the story mode.