AstroKobi
Space · Astronomy · Wonder
explainersSunday, July 12, 2026·2 min read

Why Space Video Games Can’t Accurately Depict the Vast Scale of the Universe

Space games struggle to portray cosmic distances, from the 93‑billion‑light‑year universe to a 25,000 mph Orion speed, forcing developers to shrink reality.

Diverse group of friends enjoying video games together in a cozy home setting.
Photo: Yan Krukau

Space is so vast that even the most ambitious video games stumble when trying to capture its true magnitude. The observable universe stretches about 93 billion light‑years, while our Milky Way spans roughly 100,000 light‑years. Recent interviews with astrophysicist Dr. Jeffrey Bennett reveal just how tiny planetary distances become on a 1‑to‑10 billion scale. Understanding these limits matters for both game design and public perception of astronomy.

What happened

The article notes that the observable universe is about 93 billion light‑years across, dwarfing the 100,000‑light‑year Milky Way. This sheer size makes any attempt to model true interstellar distances in real time impossible with today’s processors.

Even the fastest human‑made spacecraft, such as Orion’s 25,000 mph trans‑lunar injection, would need roughly 80,000 years to reach Alpha Centauri, illustrating how current propulsion concepts cannot bridge cosmic gaps within a game’s playable timeframe.

Bennett’s 1‑to‑10 billion scale shrinks the Sun to a grapefruit, places Earth a ball‑point size 15 m away, and puts the Moon only 4 cm distant. On that scale, walking to the outer planets would take about ten minutes, while reaching the nearest star would require a trek across the United States.

Why it matters

The mismatch between perceived and actual distances can shape player expectations about space travel, potentially reinforcing misconceptions. Developers must balance scientific fidelity with gameplay pacing, and hardware constraints often force simplifications that affect immersion. Accurate scale also offers educational opportunities, turning games into informal outreach tools.

+ Pros
  • Creates dramatic, fast‑paced gameplay that keeps players engaged.
  • Allows developers to work within current hardware limits.
  • Enables artistic freedom to craft memorable worlds.
Cons
  • Can embed false ideas about how far stars really are.
  • May strain processing power if realism is pursued.
  • Often forces unrealistic travel speeds, breaking immersion for informed players.

How to think about it

  1. Define the narrative distance needed. 2) Choose a consistent scale factor. 3) Use visual cues such as star density and travel‑time indicators to hint at vastness. 4) Offer optional “real‑scale” modes for education. 5) Test performance on target hardware to ensure smooth gameplay.

FAQ

How far is the nearest star in typical game units?+
Most games treat Alpha Centauri as a few hundred kilometers or light‑seconds away, far shorter than the true 4.37 light‑years.
Can current hardware render true interstellar distances?+
No. Simulating 93 billion light‑years at any meaningful resolution would exceed memory and processing limits of today’s consoles and PCs.
What tricks do developers use to suggest scale?+
Procedural generation, speed‑up time‑lapses, warp mechanics, and visual scaling of star fields are common techniques to convey vastness without exact distances.
Sources
  1. 01 Why space games still struggle with the scale of the universe
  2. 02Why space games still struggle with the scale of the universe
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