Don't let your little bro... take your pokemon gold outside. I let mine and the bottom was full of dirt... I decided to see if anything would happen if i played it with the dirt xD... and my level 83 lugia was replaced with a level 251 Rhydon and my Level 29 Gyarados was a level 189 Seadra holding a TeruSama... And the weirdest part is my level 251 Rhydon's STAT screen took me to box 1! (which i used when my pokemon got weak in battle to take out one of my numerous mewtwos...) It was sorta cool but sorta freaky...