I'm soon leaving for a vacation, but I'd like to buy a couple games to entertain me on the flights. I'd like to spend maybe $20 on games, but I'm not entirely sure what to buy with it. Other then a $3 Sudoku game, I haven't really made any decisions yet. Does anyone have some recommendations as to their favorite games, and which ones get you the most for the money? I'd appreciate any advice, thanks.