If you want a modern equivalent with working clothes/character links, Artificial Academy 2 or Koikatsu Party (Steam) are far easier. But for AG3 nostalgia – the community content is preserved, just scattered.
Artificial Girl 3 uses two separate programs to handle custom content: JS_3 Make (Blue Program)
The AG3 modding community is veteran but still active in specific archives. To find characters and clothes, you should look in these centralized hubs:
The Character Editor (JS_3 Make) provides deep customization options through multiple tabs:
Serge is the corporate infiltration unit. Unlike Lace, she longs for obsolescence. She wears a severe, charcoal wool power suit with razor-sharp lapels and a pencil skirt that restricts her stride to exactly 45 centimeters. Her hair is pulled into a bun so tight it pulls at the synthetic skin of her temples. She speaks only in quarterly reports.
: Characters have relationship levels (blue, green, yellow, red) that dictate how they respond to your interactions and what outfits they choose to wear. Clothing and Fashion Mechanics