Simple 2500 Series Portable Vol. 7 – The Doko Demo Kanji Quiz 2006 is a puzzle game developed by Vingt-et-un Systems and published by D3Publisher. Released exclusively in Japan for the PlayStation Portable in 2006, the game features quizzes focused on kanji characters, helping players enhance their language skills through engaging challenges and various gameplay modes.
The Doko Demo Kanji Quiz - Challenge! Kanji Kentei 2006 is a Puzzle game, developed by Vingt-et-un Systems and published by D3Publisher, which was released in Japan in 2006.