Rolypolys no Nanakorobiyaoki

Rolypolys no Nanakorobiyaoki (commonly referred to as Roly Polys) is an educational game developed by O.S.D. and published by Shinko Music in March 1997. O.S.D. Stated on their English site that they wanted to create a more light-hearted and family-friendly game in response to their often disturbing previous works. The game was designed to help teach children English and appears to be centered around a series of videos for every letter of the alphabet, but not much else is known. The game was considered lost media for several years, until July 21, 2019 when it was uploaded to the internet after a member of the Osamu Sato Discord group won a copy of the game in an online auction for $80.

Roly Polys was released only in Japan. There was hope for a release in the U.S. and Europe, but O.S.D. was unable to find a publisher. The game was followed by another Japan-only sequel, Rolypolys no Sekai Ryokou.

"Nanakorobiyaoki" or 七転び八起き, literally translates to "falling down seven times and getting up eight." This is a Japanese idiomatic expression meaning not giving up until you succeed.