If you were the child of indulgent parents in the early 90s the struggle - the war - was real. Sega or Nintendo? Sonic or Mario? Game Gear or Game Boy? Before iOS and Android. Before Apple and Samsung. It was Sega and Nintendo that were fighting for your hearts and minds. This week, on Bookmark, Uma speaks to Blake Harris about his book "Console Wars: Sega, Nintendo, and the Battle That Defined a Generation" that chronicles the history of this remarkable rivalry.