Competition in the life simulation genre is prompting candid reflections from inside Electronic Arts. Speaking at the Develop conference, The Sims 4 senior character artist Jess Hyland pointed to indie competitor Paralives as an inspiration for features currently absent from EA's long-running franchise.

Quick Facts

  • Game: The Sims 4 (PC, Mac, PlayStation 4, Xbox One, Xbox Series X/S)
  • Source Event: Develop conference talk by EA senior character artist Jess Hyland
  • Competitor Discussed: Paralives (Steam Early Access launch in late May)
  • Core Technical Hurdle: Symmetrical base character meshes and baked-in masculine/feminine binaries

Asymmetric Shoes and Prosthetic Limitations

During her conference appearance, Hyland discussed her impressions of Paralives after checking out its character creator. Specifically, she highlighted the competitor's support for non-uniform footwear and accessories.

"I opened up the character creator and I was like 'Oh, they can do asymmetric earrings, I wish I could do that, or asymmetric shoes','" Hyland said. Because Paralives was built to support one distinct shoe on the left foot and another on the right, the underlying system easily accommodates additions like a prosthetic leg that do not require replacing both feet.

By contrast, character bodies in The Sims 4 are built symmetrically. Symmetry is only broken when players apply independent assets like clothes, hairstyles, or tattoos. Adding a prosthetic leg currently requires artists to craft a boot that covers the entire leg alongside a matching shoe for the opposite side, resulting in a baked-in asset that cannot be mixed and matched with other footwear.

Overcoming Early Development Constraints

The Sims 4 launched in 2014, and foundational architecture from that era continues to shape development constraints. When the team wanted to decouple a character's appearance from their gender presentation back in 2015, they faced significant hurdles due to subtle and geometric differences between the masculine and feminine base meshes.

To bridge the gap across older content packs, EA utilized an invisible cummerbund mesh that sits over characters, allowing artists to attach outfits where waistlines did not line up between models. While newer content relies less on this workaround, older packs still depend on it to share clothing across different character frames.

Hyland noted that ideally, the team would love to eliminate the baked-in masculine and feminine binary entirely in favor of a single base mesh. However, she acknowledged the massive amount of engineering work required to unpick decisions made more than a decade ago. Similar code challenges surfaced during the development of recent expansions like Lovestruck, which required designers to overhaul underlying relationship dynamics built on decades-old defaults.

With Paralives entering Steam Early Access and offering an alternative sandbox experience, developers are actively watching how a clean-sheet competitor handles systemic limitations that have constrained The Sims franchise for years.