Why does my game crash on the Steam Deck but not on PC?

Because the Steam Deck runs your Windows game through Proton (a compatibility layer) on Linux, with specific hardware and a controller-first setup, so something that works on native Windows can fail in that different environment. The Steam Deck isn't a normal Windows PC, it runs SteamOS (Linux), and most Windows games run on it through Proton, a compatibility layer that translates Windows/DirectX calls to Linux/Vulkan. This different environment, plus the Deck's specific hardware and input, means a game can crash on the Deck while running fine on a native Windows PC. Common reasons: Proton/Linux compatibility issues (something your game does that doesn't translate correctly through Proton, a Windows-specific dependency or API, a file path assumption, a feature Proton handles imperfectly, an anti-cheat or DRM that doesn't work under Proton, causing a crash that doesn't happen on native Windows), hardware/performance constraints (the Deck has specific, modest hardware and limited memory, so a game that runs on a powerful PC can hit resource limits, out-of-memory, performance-related issues, on the Deck), input issues (the Deck is controller-first with its specific controls, so input handling that assumes keyboard/mouse or specific controllers can break), and resolution/display issues (the Deck's specific resolution and display can expose issues). These don't happen on your native Windows PC (no Proton layer, different hardware, mouse/keyboard), so they're invisible to you until you test on a Deck or capture crashes from Deck players. So your game crashes on the Steam Deck but not on PC because the Deck's Proton/Linux environment, specific hardware, and controller-first setup differ from native Windows, exposing issues your PC doesn't. Bugnet captures crashes from the field with platform and device context, so you can see the crashes occurring specifically on the Steam Deck (which you won't see on your PC), identify whether it's a Proton compatibility issue, a hardware constraint, or an input/display problem, fix it for the Deck, and verify per version the crashes stopped on the platform.

How do I make my game work on the Steam Deck?

Test on the Deck (or capture crashes from Deck players), address Proton/Linux compatibility issues, accommodate its hardware and memory, and support controller input and its resolution, the goal is your game running well in the Deck's specific environment. Making your game work on the Steam Deck means ensuring it runs in the Deck's environment, Proton/Linux, specific hardware, controller-first. Key steps: test on the Deck (the most direct way, run your game on an actual Deck to find compatibility, performance, and input issues, Steam also provides Deck compatibility testing), and capture crashes from Deck players in the field (if you don't have a Deck or to catch what testing missed). Address Proton/Linux compatibility: ensure your game runs under Proton, avoid or handle Windows-specific dependencies that don't translate, ensure DRM/anti-cheat is Proton-compatible (a common blocker), handle file paths and platform assumptions, test that your game's features work through the compatibility layer. Accommodate hardware and memory: the Deck has modest, specific hardware and limited memory, so ensure your game performs acceptably and fits the memory (offer settings that suit the Deck, target its performance, avoid out-of-memory). Support controller input: the Deck is controller-first, so ensure full controller support (the game playable entirely with the Deck's controls, good default control mappings, no reliance on keyboard/mouse for essential actions). Handle the resolution: support the Deck's resolution and ensure UI/text is readable on its screen. Aim for Steam Deck Verified/compatible status (Valve's criteria cover input, display, and functionality). So you make your game work on the Steam Deck by testing on it (or capturing Deck crashes), fixing Proton/Linux compatibility, accommodating its hardware/memory, and supporting controller input and resolution. Bugnet captures crashes from Deck players in the field with context, so you can see what's breaking on the Deck (even without owning one), fix the Deck-specific issues (compatibility, performance, input), and verify per version the crashes stopped on the platform, helping you support the Steam Deck's growing audience by finding and fixing what breaks in its specific environment.

How do I debug Steam Deck-specific crashes?

Capture the crashes from Deck players with context, since the Deck's Proton/Linux environment differs from your PC, the captured Deck crashes reveal what's breaking there, and you can reproduce on a Deck or via Proton if needed. Steam Deck-specific crashes happen in the Deck's environment (Proton/Linux, specific hardware, controller input) that differs from your development PC, so they may not reproduce on your Windows machine, and the captured field crashes are key to debugging them. Capture the crashes from Deck players with full context: the stack trace (where it crashed), the platform/device context (confirming it's the Deck), and the conditions, which reveal what's breaking on the Deck. Read the evidence: a stack trace pointing at a Windows-specific call or dependency suggests a Proton compatibility issue, a crash correlating with memory or performance suggests a hardware constraint, a crash around input suggests a controller issue. To reproduce and fix, you have options: test on an actual Steam Deck (the most direct, run the game and trigger the crash in the real environment), or run your game through Proton on a Linux machine (or use Proton/Linux testing setups) to approximate the Deck's compatibility environment, or use the Deck's developer mode and tools. The captured context tells you what to focus on (which compatibility issue, constraint, or input problem) so your reproduction and fixing are targeted. Valve provides Steam Deck developer documentation and the ability to test compatibility. So you debug Steam Deck-specific crashes by capturing them from Deck players with context (revealing what's breaking in the Deck's environment), then reproducing on a real Deck or via Proton/Linux as needed, guided by the captured evidence. Bugnet captures the Deck crashes from the field with stack traces and context, so you can see and diagnose what's crashing on the Steam Deck even if you can't easily reproduce it on your PC, identify the Deck-specific cause from the captured evidence, fix it, and verify per version the crashes stopped on the Deck, debugging a distinct platform from the field data when local reproduction is hard.

What to Do When Your Game Crashes on the Steam Deck

Quick answer: Capture the crashes with Steam Deck context, identify whether it's a Proton/Linux compatibility issue, a hardware/performance constraint, or an input/resolution issue, fix for the Deck, and verify the crashes stop on Deck.

The Steam Deck is a popular but distinct platform, Linux via Proton, specific hardware, controller-first, so games crash on it in ways you won't see on your Windows PC. Captured Deck context reveals them. Here is what to do when your game crashes on the Steam Deck.

Capture the Crashes With Steam Deck Context

The Steam Deck runs your Windows game through Proton (a compatibility layer) on Linux, with its own hardware and controller-first input, so it can crash in ways your Windows PC doesn't. Capture the crashes from Deck with context, so you see what's crashing specifically on the Deck, which you won't see on your own machine.

Bugnet captures crashes from the field with platform and device context, so you can see the crashes occurring specifically on the Steam Deck. Since the Deck is a distinct environment (Proton/Linux, specific hardware) you likely don't develop on, the captured Deck crashes are how you see what's breaking there, turning Deck-specific crashes from invisible into diagnosable.

Identify the Deck-Specific Cause

Find why it crashes on Deck: a Proton/Linux compatibility issue (something your game does that doesn't translate through Proton, a Windows-specific dependency, a path, an API), a hardware/performance constraint (the Deck's specific hardware and memory), or an input/resolution issue (controller-first input, the Deck's resolution). The captured crash points at which.

Bugnet's captured stack trace and context help you identify the Deck-specific cause, a compatibility failure, a resource constraint, an input issue. Knowing what's crashing on the Deck (from the captured evidence) tells you whether it's a Proton compatibility problem, a hardware limit, or an input/display issue, so you fix the right thing for the Deck.

Fix for the Deck and Verify

Fix the Deck-specific cause: address the Proton/Linux compatibility issue, accommodate the Deck's hardware/performance, or handle the controller input and resolution. Then verify the crashes stop on the Deck, confirming via field data from Deck players (or a Deck if you have one), that the fix worked on the platform.

Bugnet tracks crashes per version with platform context, so after fixing you can confirm the crashes stopped specifically on the Steam Deck. This verifies the Deck fix in the field, the Deck crashes gone, which is how you confirm it worked on the platform, especially valuable if you don't have a Deck to test on yourself, the field data from Deck players confirms the fix.

When your game crashes on the Steam Deck, capture the crashes with Deck context, identify whether it's a Proton/Linux compatibility issue, a hardware constraint, or an input/resolution issue, fix for the Deck, and verify the crashes stop. The Deck is a distinct platform you won't see crashes on from your PC.