▁tap ▁an ▁hour glass ▁symbol ▁on ▁the ▁touch screen ▁and ▁re wind ▁time ▁to ▁the ▁last ▁time ▁they ▁were ▁safe . ▁The ▁player ▁can ▁also ▁slow ▁down ▁time ▁if ▁there ▁are ▁any ▁obst acles ▁that ▁are ▁moving ▁too ▁fast ▁for ▁the ▁player ▁to ▁traverse . ▁The ▁player ▁has ▁a ▁limited ▁number ▁of ▁times ▁they ▁are ▁able ▁to ▁use ▁these ▁powers , ▁as ▁they ▁have ▁a ▁set ▁number ▁of ▁sand ▁or bs , ▁which ▁allow ▁them ▁to ▁manipulate ▁these ▁powers . ▁Should ▁the ▁player ▁face ▁death ▁without ▁re w inding ▁time , ▁they ▁will ▁revert ▁to ▁their ▁last ▁obtained ▁check point . ▁Prince ▁of ▁Pers ia : ▁The ▁F org ot ten ▁S ands ▁for ▁the ▁D S ▁also ▁features ▁an ▁economic ▁system , ▁allowing ▁players ▁to ▁collect ▁ruby ▁throughout ▁their ▁advent ure ▁for ▁various ▁fe ats , ▁and ▁in ▁between ▁levels , ▁exchange ▁the ▁ruby ▁with ▁the ▁merchant ▁for ▁additional ▁power - ups , ▁such ▁as ▁additional ▁in - game ▁cost umes , ▁weapon ▁up gr ades , ▁health ▁bar ▁extensions , ▁and ▁additional ▁sand ▁orb ▁sl ots . ▁There ▁are ▁also ▁sessions ▁of ▁the ▁game ▁in ▁which ▁the ▁player ▁r ides ▁a ▁horse , ▁using ▁the ▁st yl us ▁to ▁ste er ▁the ▁horse ▁left ▁or ▁right ▁to ▁e va de ▁obst acles . ▁ ▁The ▁plot ▁of ▁the ▁D S ▁version ▁cent ers ▁on ▁the ▁Prince ▁character ▁being ▁ab duct ed ▁by ▁a ▁cult . ▁This ▁cult ▁brings ▁the ▁Prince ▁to ▁an ▁ancient ▁temple ▁in ▁India ▁and ▁uses ▁his ▁sword ,