Why does my Unreal game crash in the shipping build but not the editor?

Because the shipping build and real player hardware behave differently from the editor and development builds on your machine. A class of Unreal crashes appears only in the shipping build on players' devices: shipping-build-specific issues, device and GPU-specific problems (Unreal's demanding rendering makes GPU/VRAM crashes hit certain hardware your machine may not), and out-of-memory crashes on constrained devices. Capturing crashes from real Unreal shipping builds in the field, with stack traces and device/GPU context, is how you see these.

How do I find what's crashing my Unreal game?

Capture crashes from real players (especially shipping builds) with symbolicated stack traces and device/GPU context, then read the evidence: the trace points at the cause (a null pointer at a line), and the device and GPU context reveals patterns (a GPU-specific crash, common given Unreal's rendering demands). Grouping occurrences shows the most common crashes and affected players. Then fix the cause, guard the pointer, reduce memory or VRAM use, fix the Blueprint, or guard the device/GPU-specific path.

What Causes Unreal Games to Crash?

Q: What causes Unreal games to crash?

Unreal games crash from general and Unreal-specific causes: null or invalid pointer access (accessing a destroyed or invalid object, a common crash), out-of-memory crashes, GPU and VRAM issues (running out of video memory or hitting GPU/driver problems, given Unreal's demanding rendering), Blueprint or script errors, shipping-build issues (crashes in the shipping build but not the editor or development builds), device or driver-specific problems, and asset loading failures. Many are device-specific (especially GPU-related) or shipping-build-specific.

Quick answer: Unreal games crash from null/invalid pointer access, out-of-memory and GPU/VRAM crashes, Blueprint or script errors, shipping-build issues differing from the editor, and device or driver-specific problems. Capturing crashes from real builds reveals the cause.

Unreal Engine games can crash for general reasons and some specific to Unreal and shipping builds. Here's what causes Unreal games to crash.

Common Unreal Crash Causes

Unreal games crash from a mix of general issues and Unreal or build-specific ones.

Null or invalid pointer access, accessing a destroyed or invalid object or pointer, a common Unreal crash
Out-of-memory crashes, exceeding system or video memory, especially on constrained devices
GPU and VRAM issues, running out of video memory or hitting GPU/driver problems with Unreal's demanding rendering
Blueprint or script errors, logic errors in Blueprints or code
Shipping-build issues, crashes in the shipping build that don't happen in the editor or development builds
Device or driver-specific problems, crashes on certain hardware, GPUs, or drivers
Asset or content loading failures, crashes loading assets or levels

Many Unreal crashes are device-specific (especially GPU-related, given Unreal's rendering demands) or shipping-build-specific, which makes capturing them from real players important.

Why Editor Testing Misses Them

Unreal crashes can appear in the shipping build on players' devices but not in the editor or development builds, the shipping build and real hardware behave differently. And Unreal's demanding rendering means GPU and VRAM crashes hit certain hardware your machine may not. So editor testing misses a class of crashes.

Bugnet captures crashes from Unreal shipping builds in the field with stack traces and device context, so crashes that only happen on real devices surface. Capturing from real players is how you see crashes the editor and your hardware hide.

Finding and Fixing Unreal Crashes

Finding Unreal crashes means capturing them from real players with stack traces and device/GPU context, then reading the trace (a null pointer, the failing line) and the device/GPU pattern (a GPU-specific crash). Then you fix the cause, guard the pointer, reduce memory or VRAM use, fix the Blueprint, or guard the device-specific path.

Bugnet captures and symbolicates Unreal crashes with device and GPU context, so you can find the cause and affected hardware. So Unreal games crash from null pointers, out-of-memory, GPU/VRAM issues, and shipping-build or device-specific problems, and finding them means capturing crashes from real shipping builds with context.

Unreal games crash from null pointers, out-of-memory, GPU/VRAM issues (given demanding rendering), Blueprint errors, and shipping-build or device-specific problems. Many appear in the shipping build but not the editor, so capture from real players with context.