ðə sˈɪɹiz wʌz kɹiːˈeɪɾᵻd baɪ kˈætsɜːɹə hæʃˈiːnoʊ, hˌuː wˈɔntᵻd tə jˈuːz ðə dˌiːˈɛsɪz kəntɹˈoʊlz tʊ ɛksplˈoːɹ ɐ sˌɪmjʊlˈeɪʃən tˈaɪp ˈoʊnli pɹˈiːviəsli pˈɑːsᵻbəl ˌɔn pˌiːsˈiːz.
The series was created by Katsura Hashino, who wanted to use the DS's controls to explore a simulation type only previously possible on PCs.