Huge growth for Detective Pikachu Returns over the original on the 3DS. Numbers provided by Chris1964 from InstallBase
Famitsu Sales: Week 12, 2018 (Mar 19 - Mar 25)
04./00. [3DS] Detective Pikachu <ADV> (Pokemon Co.) {2018.03.23} (¥4.980) - 34.037 / NEW <40-60%>
Famitsu Sales: Week 41, 2023 (Oct 02 - Oct 08)
01./00. [NSW] Detective Pikachu Returns <ADV> (Pokemon Co.) {2023.10.06} (¥5.980) - 85.639 / NEW