Nagase Brothers Inc

Play de Oboeru - Chuugaku Eitango Deruderu 1200 Japan	Sony - PlayStation	1999
Play de Oboeru - Chuugaku Eitango Deruderu 1200 [Reprint] Japan	Sony - PlayStation	2000
Play de Oboeru - Eitango Deruderu 1700 Japan	Sony - PlayStation	1999
Play de Oboeru - Eitango Deruderu 1700 [Center Shiken Level Taiou] Japan	Sony - PlayStation	1999
Play de Oboeru - Eitango Deruderu 1700 [Rerelease] Japan	Sony - PlayStation	2001
Play de Oboeru Eijukugo Deruderu 750 Japan	Sony - PlayStation	2000
Play de Oboeru Eijukugo Deruderu 750 [Reprint] Japan	Sony - PlayStation	2000
Play de Oboeru Series - Play de Oboeru Kanji Kentei Deruderu 1100 Japan	Sony - PlayStation	2000
Play de Oboeru Series - Play de Oboeru Kanji Kentei Deruderu 1100 [Deluxe Package] Japan	Sony - PlayStation	2000
Play de Oboeru Series Nihonshi Quiz Deruderu 1800 Japan	Sony - PlayStation	2000
Play de Oboeru Series Nihonshi Quiz Deruderu 1800 [Reprint] Japan	Sony - PlayStation	2000
Play de Oboeru Series Sekaishi Quiz Deruderu 1800 Japan	Sony - PlayStation	2000
Play de Oboeru Series Sekaishi Quiz Deruderu 1800 [Reprint] Japan	Sony - PlayStation	2000
Play de Oboeru Series Toeic Test - Goku Deruderu 1700 Japan	Sony - PlayStation	2001
Play de Oboeru Series Toeic Test - Goku Deruderu 1700 [Reprint] Japan	Sony - PlayStation	2001