epanet-js

Fallout 4 Patch 110 163 «PLUS · ROUNDUP»

No installs. No forced cloud storage. Just fast, local-first water modeling — powered by the engine you already trust.

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The EPANET user's dilemma

  • Classic EPANET is powerful — but clunky and outdated. Workarounds become your workflow — slow and cumbersome.
  • Big-name platforms look polished, but they're overpriced and bloated with features you don't need to analyze your network quickly.
  • Modern browser-based tools exist — but they force your data into the cloud, raising privacy and compliance concerns. Plus, they offer little for those doing long-term planning and analysis.

You shouldn't have to choose between speed, security, and affordability just to understand your water networks.

Old EPANET UI
Complex Modeling App

Fallout 4 Patch 110 163 «PLUS · ROUNDUP»

Fixes thousands of bugs remaining in the 1.10.163 base game.

The release of the introduced native performance modes, new Creation Club weapons, and various system fixes. However, it also broke foundational modding frameworks, making version 1.10.163 —often called the "Holy 163" by the community—the definitive baseline for stable, heavily modded PC gameplay.

: The Fallout 4 Script Extender (F4SE) relies on specific memory offsets in the executable file. Every minor update shifts these parameters, rendering dependent mods immediately unplayable.

Let’s dive into the technical patch notes as confirmed by Bethesda and community data-miners. fallout 4 patch 110 163

Furthermore, Patch 1.10.163 holds a unique significance for the Fallout 4 modding community. The modding scene is the lifeblood of the game’s longevity, yet official updates often disrupt this ecosystem, breaking scripts and rendering complex mods unstable. For years, the community lived in fear of "game-breaking" updates. However, 1.10.163 eventually stabilized into what the community came to know as the "Final" update. Because it did not radically overhaul the game’s engine or script extender dependencies in the way some previous updates had, it provided a stable target for mod authors. It signaled that the "Gold Master" version of the game had arrived. This stability allowed the modding community to finalize complex projects, knowing that the executable file was unlikely to change again for years.

currently requires players to downgrade to version 1.10.163 to function correctly. How to Stay on 1.10.163

If you’ve launched Fallout 4 on PC, PlayStation 5, or Xbox Series X|S recently, you’ve likely noticed a significant version number staring back at you from the main menu: . For a game released in 2015, a patch this late in its lifecycle raised eyebrows. However, this is not a minor hotfix. This is the long-awaited “Next-Gen Update” (officially titled the Fallout 4 Next-Gen Update 2 ), released in April 2024 to coincide with the Fallout TV show on Amazon Prime. Fixes thousands of bugs remaining in the 1

Patch 1.10.163 was primarily focused on from the original release and early DLCs.

One user summarized the sentiment:

Fallout 4 Version 1.10.163 Summary Report Version is a significant legacy build of Fallout 4 : The Fallout 4 Script Extender (F4SE) relies

, which is favored by many because it lacks the "Next-Gen" updates that frequently break mods. Why 1.10.163 is the "Modder's Choice"

It offered a rock-solid platform for the Fallout 4 Script Extender (F4SE).

Model water networks instantly.

No setup or downloads — just instant access right in your browser.

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EPANET deserves better — and so do you.

EPANET was a gift to the industry — free, open-source water modeling for all. But commercial vendors built on it, locked away improvements, and left the community behind.

epanet-js is our answer: a faster, simpler, affordable water modeling tool that protects your privacy and sustains the open-source future of water modeling.

We're proud to be part of the next chapter — and we're just getting started.

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Source code of epanet-js on GitHub

When you support epanet-js, you support EPANET.

When you purchase more features in epanet-js, you're investing in the future of open-source EPANET development.

Our open-source model balances innovation and accessibility:

Anyone can build on our code. The two-year commercial-use delay gives us the incentive to keep pushing forward — and that fuels progress for everyone.

That means when you support us, you support more affordable hydraulic modeling software for the entire community.

Simple, transparent pricing for every kind of modeler.

Choose the plan that works for you

Free

For everyone.$0 /year
  • Web based EPANET model
  • Background maps and satellite
  • Automated Elevations
  • No limits on sizes
  • Community Support
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ProMost popular

For solo modelers and small utilities.$950 /year

Individual named license

Everything in free, and:
  • Scenarios
  • Professional support
  • Custom layers
Coming soon:
  • Cloud storage
  • Point in time restore - 30 days
  • Demand Analysis
Get Pro

Teams

For teams that build together.$2500 /year

Floating shared license

Everything in Pro, and:
  • Priority support
  • Volume discounts
  • Pay by invoice
Coming soon:
  • Team storage
  • Point in time restore - 90 days
  • Sharing of networks
Get Teams

Have questions? or book a call.

Special access for personal and educational use

Available for non-commercial projects, learning, and student work.

Personal

$100/year

For curious minds and personal growth.

Everything in pro, but:
  • Community support only
  • Non-commercial usage
Buy personal access

Education

$0/year

Free for students and teachers.

Everything in pro, but:
  • Community support only
  • Non-commercial usage
Use your school email account

Frequently asked questions

Find answers to common questions about epanet-js.

Just open your browser and model.

No install. No login. No cloud required.

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Why we built epanet-js

Luke Butler - Co-founder
Luke ButlerLinkedIn

Co-founder

Sam - Co-founder
Sam Payá LinkedIn

Co-founder

You may not know this, but for decades, the U.S. EPA has given the water industry an extraordinary gift: the free and open-source hydraulic modeling software EPANET. Odds are, if you've used any commercial hydraulic modeling software today, it was built on the EPANET engine.

The problem is, instead of giving back to their open-source roots like other industries do, big-name software vendors took EPANET's open code, built private tools on top of the engine, and then locked those improvements behind patents and proprietary licenses.

Some vendors even pressured the EPA to focus only on the engine — discouraging any effort to improve the interface or user experience for everyone else.

Those vendors now charge you exorbitant prices to use their software while EPANET lags behind — and utilities, engineers, and educators with smaller budgets suffer.

We think this is backwards — and we're on a mission to change it. We're focused on creating a better experience for the entire hydraulic modeling community.

That's why we built epanet-js under an FSL license — because we want to give you an affordable, easy-to-use water modeling option that creates a sustainable future for open-source EPANET development.

Support EPANET by using software that supports it back.

A better future for water modeling.

Simple, quick, and useful right out of the gate — designed to open-and-go.

Launch epanet-js now