While specific features vary by developer, version 09c often focuses on expanding the utility of iconic gadgets. In the original canon, Doraemon travels from the 22nd century to help Nobita Nobi. Fan versions like 09c often try to gamify these tools:
Creating original storylines that go beyond the typical "Nobita gets bullied by Gian" trope. doraemon x ongoing version 09c
Enhancing the 2D sprites to better match modern anime aesthetics. While specific features vary by developer, version 09c