Here are online quiz games to help you memorize the maps, countries, capitals, and flags of Ch26. If you see extra countries not listed in Ch26, then it will be an easy and quick review or preview.
http://www.purposegames.com/game/east-asia-physical-map-quiz
http://www.purposegames.com/game/27ced424af
http://www.purposegames.com/game/east-asia-capitals-quiz
http://www.purposegames.com/game/east-asian-countries-and-capitals-quiz
http://www.purposegames.com/game/3e77bf9b