▁answers ▁incorrectly , ▁they ▁are ▁stopped ▁for ▁about ▁a ▁second ▁and ▁have ▁to ▁answer ▁the ▁same ▁question . ▁One ▁player ▁or ▁team ▁can ▁comp ete ▁against ▁player ▁records ▁( a ▁computer ▁oppon ent ▁with ▁skills ▁based ▁on ▁that ▁player ' s ▁best ▁test ▁performance ). ▁ ▁In ▁M ental ▁Mar athon ▁a ▁team ▁works ▁together ▁( or ▁an ▁individual ▁works ▁alone ) ▁to ▁score ▁as ▁many ▁points ▁as ▁possible ▁within ▁a ▁time ▁limit . ▁Ext ra ▁time ▁is ▁reward ed ▁after ▁each ▁question , ▁based ▁on ▁the ▁length ▁of ▁the ▁next ▁question ; ▁less ▁time ▁is ▁awarded ▁as ▁the ▁game ▁goes ▁on . ▁One ▁mistake ▁ends ▁the ▁game . ▁A ▁maximum ▁score ▁of ▁ 1 0 0 ▁is ▁possible . ▁ ▁In ▁Bra in ▁Qu iz ▁players ▁take ▁turns ▁choosing ▁from ▁a ▁selection ▁of ▁ 1 2 ▁categories . ▁Each ▁category ▁has ▁a ▁difficulty ▁attached ▁to ▁it , ▁though ▁this ▁is ▁hidden ▁until ▁the ▁category ▁is ▁selected . ▁When ▁the ▁player ▁selects ▁ ▁a ▁category ▁with ▁a ▁red ▁? , ▁if ▁the ▁player ▁is ▁luck y ▁the ▁difficulty ▁will ▁be ▁medium ▁with ▁double ▁points , ▁if ▁un l ucky ▁the ▁difficulty ▁will ▁be ▁expert . ▁During ▁their ▁turn , ▁players ▁must ▁try ▁to ▁answer ▁as ▁many ▁questions ▁as ▁possible ▁within ▁the ▁time ▁limit , ▁but ▁one ▁wrong ▁answer ▁will ▁end ▁the ▁turn . ▁This ▁mode ▁is ▁notable ▁for ▁having ▁ 5 ▁extra ▁games , ▁one ▁from ▁each ▁category , ▁that ▁do ▁not ▁appear ▁elsewhere ▁in ▁the ▁game . ▁ ▁In ▁Academ ic ▁Su