▁b oss ▁character , ▁providing ▁story - dri ven ▁challeng es ▁throughout ▁the ▁game . ▁Maps ▁are ▁non - linear , ▁and ▁often ▁require ▁the ▁player ▁to ▁traverse ▁the ▁map ▁multiple ▁times ▁during ▁the ▁course ▁of ▁the ▁game . ▁We aker ▁mon sters ▁will ▁inhab it ▁other ▁parts ▁of ▁the ▁level , ▁re - sp aw ning ▁when ▁the ▁player ▁revis its ▁those ▁rooms , ▁and ▁often ▁can ▁be ▁defeated ▁to ▁gain ▁health , ▁am mun ition , ▁or ▁experience ▁points . ▁ ▁Lar ger ▁games ▁generally ▁feature ▁save ▁points ▁as ▁well ▁as ▁the ▁ability ▁to ▁transport ▁the ▁player ▁quickly ▁between ▁certain ▁rooms ▁on ▁far ▁sides ▁of ▁the ▁map , ▁elimin ating ▁ted ious ▁back track ing ▁in ▁the ▁later ▁parts ▁of ▁the ▁game . ▁Access ▁to ▁new ▁ab ilities ▁can ▁also ▁open ▁up ▁shortcut s ▁that ▁reduce ▁travel ▁time , ▁as ▁well ▁as ▁discover ▁secre ts ▁that ▁help ▁to ▁improve ▁the ▁character ' s ▁ab ilities . ▁For ▁example , ▁gain ing ▁access ▁to ▁double ▁jump ▁or ▁wall ▁jump ▁ab ilities ▁can ▁give ▁players ▁more ▁mob ility , ▁while ▁obtain ing ▁the ▁ability ▁to ▁transform ▁into ▁a ▁smaller ▁object ▁can ▁let ▁the ▁player ▁s lip ▁through ▁narrow ▁cor rid ors . ▁As ▁such , ▁the ▁genre ▁focus es ▁on ▁expl oration ▁of ▁a ▁large ▁world ▁map , ▁and ▁adv ancement ▁of ▁the ▁player - character ▁ab ilities ▁over ▁time . ▁Met roid van ias ▁are ▁sometimes ▁referred ▁to ▁as ▁" platform ▁advent ure ▁games " ▁due ▁to ▁this ▁scope . ▁ ▁Met