Flattop Kincaid is tricked by a street vendor into buying a computer game called "Days and Knights", and he's pretty disappointed when it looks as if it's just another dungeons and dragons game. But when he finds himself trapped inside the game and sent back through time to the middle ages, Flattop realizes that this game is for keeps.<P>When he lands in 12th-century England wearing his Little League uniform, Flattop is pegged as royalty: only a nobleman would have a red satin embroidered jacket. As no serf would dare offend a member of the nobility, Flattop is relieved when the owners of the pig sty in which he's fallen seem to befriend him. Flattop's taken in by a family of peasants who are awed by his expensive clothes, yet they wonder why he hasn't a clue about chivalry, manners or his station in society. Instead he's busy trying to teach them how to belch out a tune called "Happy Birthday".<P>The peasants are relieved when Flattop goes off to the castle with his own kind, but Flattop knows he won't be truly saved until he gets back to his own century.<P>In this first novel, Deborah Scott opens up the 12th century to young readers with her terrific historical descriptions and deft humor. By contrasting modern civilization with medieval life, Scott has created a book that will appeal to history buffs, armchair adventurers and readers of humor.