The top 10 neighbors span gaming platforms, game developers, gaming media, athletes, and actors — no single category dominates, which is the defining structural fact about Mass Effect's audience shape.
The shape is broad. Steam leads at 0.82, followed closely by Larry Hryb (0.81), BioWare (0.80), PC Gamer (0.80), and Bethesda (0.80) — five neighbors within a 0.02-point band, none pulling decisively ahead. The core of the top 10 is gaming infrastructure: two entertainment platforms (Steam, Ask PlayStation), three game developers (BioWare, Bethesda, and implicitly the publisher Electronic Arts at 0.77 just outside the top five), and two gaming magazines (PC Gamer, Game Informer at 0.77). That cluster is the expected same-kind neighborhood for a Video Game Franchise.
The cross-kind entries are the more telling signal. Stephen Amell (0.79, Actor) and CM Punk (0.77, Athlete) both clear the top 10, sitting alongside Xbox Game Pass (0.77) and Game Informer (0.77). Only one other Video Game Franchise appears in the top 10: Marvel's Avengers at 0.76. The presence of an actor and a professional wrestler at this tier — ahead of most fellow game franchises — indicates the audience overlaps meaningfully with entertainment fandoms beyond gaming proper.
The broad shape means no single neighbor defines this audience; it is held together by a wide gaming-and-entertainment core rather than a tight niche.