Gotta Scal'em All

This is the documentation of the Scalem Unreal Visual Scalability Editor that can help you make your project scalable for specific target machines.

What is Scalem?

Balancing Unreal’s DefaultScalability.ini is often a grind: endless numbers, trial & error, spreadsheets, and lots of guesswork.

Scalem changes that. It’s a dedicated editor window that lets you visualize, compare, and fine-tune scalability settings—based on real data from your target machines.

• Save hours of trial & error – adjust values with intuitive sliders instead of juggling numbers.
• Work with reality, not assumptions – fetch real performance data from the PCs that matter.
• Experiment without risk – create and compare multiple scalability presets instantly.
• Keep your pipeline clean – Scalem uses Unreal’s native scalability system, nothing proprietary.
• Get team alignment – no more subjective debates, just shared visual data.

Quick Links

• Purchase Scalem (fab link)
• Scalem How to/Quick start guide
• Download demo data
• Report issues

Table of Contents

1. Introduction: Terminology
2. Scalability in Unreal
3. Scalem User Guide

How to Read this Documentation

In the beginning, you’ll get a list of common terms that are used within the whole documentation. Most terms can be understood from the context, but in case of misunderstandings, you can always refer to the “definitions” in that document.

Because scalability is a complex topic and Scalem uses Unreal standards, this documentation will also guide you through Unreal scalability in general. This first part should help you understand how Unreal does scalability, fully independent of Scalem itself. Everything mentioned in that part applies to your projects whether you’re using Scalem or not.

The second part is about Scalem itself. It builds on top of the knowledge you gained from the first part, so I recommend reading that part first. You’ll learn about the general layout of the Scalem windows and how to use them. If you want to jump into the cold water, you can also access the Scalem How to immediately.

The source code of this documentation is available here.

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