How do I capture crashes in a Godot C# game?

Hook the .NET unhandled exception handling and Godot C# error path to capture C# exceptions with their type, message, and full stack trace including inner exceptions, where the root cause is often wrapped. The stack traces are readable, pointing directly at the line that threw, since Godot C# runs on the .NET runtime, giving clean crash reports for most of your game-logic crashes.

What is the engine boundary in a Godot C# game and why does it crash?

It is where your C# code calls into the Godot engine and back, with data marshalled across the interop layer. Crashes occur there from a type that does not marshal correctly, an invalid reference across the boundary, an engine-object lifetime issue, or a misuse of the engine API from C#. Capture the engine API and data context so you can tell a boundary crash from a pure C# logic error, since they need different fixes.

Why does my Godot C# game crash only on certain platforms?

Because the .NET runtime, C# support, and the export behave differently across Godot's targets, and mobile and web exports especially can have constraints and quirks distinct from desktop. Capture the platform, export type, and build configuration so a crash specific to one export is identifiable, and test each export you ship since these platform-specific C# issues only appear when you run the actual export.

Crash Reporting for Godot C# Games

Quick answer: Capture C# exceptions with their stack traces and watch the boundary between your C# code and the Godot engine, where marshalling and interop errors occur, plus the platform and export context. Godot C# games combine .NET behavior with engine interop, so capturing both the exceptions and the boundary context makes crashes diagnosable.

Godot supports C# as a first-class language through the Mono and .NET runtime, and games written this way fail differently from their GDScript counterparts. Crashes are .NET exceptions with readable stack traces, which is convenient, but the boundary between your C# code and the Godot engine, where data is marshalled across the interop layer, introduces its own failures, and the engine still has its native layer beneath. Setting up crash reporting for a Godot C# game means capturing the C# exceptions and the boundary and platform context that explain crashes specific to the C# path.

Godot C# is .NET on the engine

A Godot C# game runs your code on the .NET runtime, integrated with the Godot engine through an interop layer. This gives you the familiar .NET exception model, crashes surface as C# exceptions with readable stack traces, which is a real advantage over interpreting native crashes. But it also means your game has a boundary, where your C# code calls into the engine and the engine calls back into your code, and data is marshalled across that boundary.

This C#-on-engine architecture shapes how Godot C# games fail. Most crashes are ordinary C# exceptions in your code, easy to capture and read, but some occur at the interop boundary, where a marshalling error, a wrong type crossing the boundary, or a misuse of the engine API produces a failure. And beneath the C# layer, the Godot engine has its native core, which can crash in ways that do not surface as a clean C# exception. Capturing crashes from a Godot C# game means covering these layers.

Capture C# exceptions

The foundation of Godot C# crash reporting is capturing unhandled C# exceptions. Hook the .NET unhandled exception handling and Godot C# error path so that any exception that would otherwise crash the game or be lost is captured with its type, message, and full stack trace including inner exceptions. The stack traces are readable, pointing directly at the line in your C# that threw, which makes these crashes straightforward to act on.

Capture the full exception chain, since the root cause is often wrapped in an inner exception beneath a more general one, and the inner exception reveals the original error. Because Godot C# uses the .NET runtime, this exception capture works much as it does in any .NET application, giving you clean, readable crash reports for the bulk of your game-logic crashes. This C# exception capture handles the errors in the code you wrote, which is most of your crashes, with the readability that the .NET model provides.

Watch the engine boundary

The distinctive crash source in a Godot C# game is the boundary between your C# code and the Godot engine. Data marshalled across the interop layer can cause errors, a type that does not marshal correctly, a reference that is invalid across the boundary, a misuse of the engine API from C#, and these produce crashes that may be harder to interpret than ordinary C# exceptions, since they involve the interop machinery.

Capture the context around these boundary crashes, the engine API being called, the data being passed, so you can identify when a crash is at the interop boundary rather than purely in your C# logic. A crash that involves marshalling or an engine call from C# points at the boundary, which is a different kind of bug than a pure logic error, often a misuse of the engine API or a lifetime issue with an engine object referenced from C#. Recognizing and capturing the boundary crashes, distinct from pure C# exceptions, is key to diagnosing the interop-specific failures of a Godot C# game.

Capture platform and export context

Godot C# games export to multiple platforms, and the .NET runtime and the export behave differently across them, so capture the platform, OS, and export context with every crash. A crash that appears only on one platform points at a platform-specific issue, perhaps in how the .NET runtime or the engine behaves there, or in the export configuration for that platform.

Mobile and web exports of Godot C# deserve particular attention, since the C# and .NET support on those targets can have constraints and quirks distinct from desktop, and a crash specific to a mobile or web export points at those. Capture the export type and whether it is a debug or release build, since C# release builds optimize and behave differently. The platform and export context lets you interpret a Godot C# crash correctly, distinguishing a universal logic bug from a platform-specific or export-specific issue, which the C# path can introduce.

Setting it up with Bugnet

Bugnet captures Godot C# crashes by hooking the .NET exception handling, recording the full exception chain and stack trace, and you attach the engine API context for boundary crashes and the platform and export context as custom fields. Reports flow into one dashboard tagged by platform, so you can see your Godot C# game crashes with the context that distinguishes logic, boundary, and platform issues.

Add custom fields for your game state and group identical exceptions into occurrence counts. Because Godot C# combines readable .NET exceptions with engine interop and multi-platform export, the captured context lets you see at a glance whether a crash is an ordinary C# bug, an interop-boundary issue, or a platform-specific problem, which determines how you fix it. The readable stack traces plus the boundary and platform context make Godot C# crashes highly diagnosable from the dashboard.

Test the exports and watch the boundary

Because the .NET runtime and C# support behave differently across Godot export targets, test each export you ship, especially mobile and web where the C# constraints are tightest, since boundary and platform issues show up when you run the actual export on the target. A Godot C# game that runs flawlessly on desktop can hit C# or interop issues on a mobile or web export that only testing there reveals.

Pay attention to the engine boundary in your testing, since the interop between C# and the engine is where the Godot-C#-specific bugs live, the marshalling errors, the engine-object lifetime issues, the API misuses. Pair your testing with the captured crash data, which surfaces the boundary and platform crashes across the range of targets and conditions you cannot fully test. Together they let you ship a Godot C# game that holds up across its exports, with the interop boundary and the platform-specific behaviors, where the C# path most often introduces crashes, kept solid.

Godot C# is .NET on the engine. Capture the readable exceptions, watch the interop boundary, and tag the platform.