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Why Does Genshin Impact Require So Much Storage Space?

As a fellow gaming enthusiast, I‘m sure you‘ve noticed the massive 70GB storage requirement for Genshin Impact. For a free-to-play mobile game, this file size seems crazy! In this comprehensive guide, I‘ll break down exactly why Genshin requires so much space and provide tips to manage its storage footprint.

High-Fidelity Graphics Push File Sizes Upward

At its core, Genshin features some of the most impressive graphics I‘ve ever seen in a mobile title. The vibrant, anime-inspired open world is rendered with an incredible level of detail and visual effects. To achieve this level of fidelity, Genshin uses high-resolution textures and 3D assets that take up a lot of storage real estate.

For example, Genshin‘s character models average 5,000 to 6,000 polygons each. For comparison, models in lower fidelity mobile games may use 1,000 or fewer polygons. All those extra polygons let miHoYo create immersive, lifelike characters at the cost of heavier file sizes.

Full Voice Acting in Multiple Languages Balloons Audio Requirements

Unlike many free mobile games, Genshin features full voice over work for all main characters and quest dialogues. This adds greatly to immersion and worldbuilding but requires storing large audio files. Genshin takes it a step further by including voice overs in Chinese, Korean, Japanese and English, with no option to delete unused languages.

To put some numbers behind it, Genshin has over 60,000 voiceover audio files totaling 14GB of storage space. That‘s over 20 hours of dialogue! Having all four language packs mandatory makes the audio alone take up nearly 20% of the total game filesize.

An Ever-Expanding Open World

Genshin Impact Map
The core of Genshin Impact is its massive open world currently spanning seven unique nations. As miHoYo continues developing the game, new regions like Sumeru and Fontaine will be added, bringing new environments, quests, enemies and gear.

For example, the newest region Sumeru added approximately 18GB of assets and content in version 3.0 alone. As the world grows, so too do storage requirements.

Every Update and Patch Adds Data

In addition to expanding the world, frequent patches, events and updates add to the game‘s filesize over time. Fixes, balance tweaks, optimizations and new features all take up space. While most updates are under 1 GB, they still accumulate, inflating the amount of storage needed.

High Bitrate Music

Genshin‘s orchestral soundtrack is utterly fantastic, contributing greatly to the game‘s sense of adventure and immersion. To maintain audio quality, the soundtrack is encoded in lossless formats like FLAC and OGG that have much higher bitrates than compressed MP3s.

The higher bitrate allows intricate instrumentation and dynamic range at the cost of filesize. In total, Genshin‘s music and sound effects take up over 5GB – or around 7% of total required space.

Future Proofing for Years of Updates

When allocating system requirements and storage space, developers build in extra padding to account for future game growth. By asking for 70GB upfront, miHoYo gives themselves breathing room to keep expanding Genshin for years to come without having to increase stated requirements suddenly down the road.

It‘s not uncommon for MMOs and evolving games to overestimate initial space needs to avoid raising the bar later and surprising players with higher requirements mid-game.

Game Engine Limitations

Genshin Impact runs on miHoYo‘s custom game engine built on top of the Unity engine. Unfortunately, one major limitation is that unused or temporary files aren‘t always cleared out efficiently.

As new regions and features are added, outdated data often isn‘t deleted automatically. Over time, these residual files can really add up, contributing to "bloat" in the game‘s install size. While not the primary factor, engine limitations do have a minor role.

Tips to Save Storage Space

While Genshin‘s massive install size seems daunting, there are a few tricks to reduce its impact:

  • Uninstall language packs you don‘t need.
  • Clear the game cache after each update.
  • Use hard drive compression or smaller SSD game drives.
  • Uninstall then redownload Genshin after major updates to clean up residual files.

Genshin Impact pushes mobile gaming to new levels with PC and console-quality production values. Achieving that level of immersion and fidelity comes at the cost of ample storage space. While 70GB is larger than average, Genshin delivers an experience that justifies the storage trade-off. With some minor optimizing, even phones and laptops can run this expansive masterpiece!

Let me know if you have any other questions about managing Genshin‘s storage needs. Happy adventuring!