Steam Next Fest Bug Preparation Checklist

A thorough Steam next fest bug preparation checklist prevents issues from reaching players. Steam Next Fest is one of the highest-stakes moments for an indie game. Thousands of players will try your demo over a single week, and their first impression determines whether they wishlist, follow, or forget. A crash during the opening minutes, a progression blocker halfway through, or a performance issue on common hardware will cost you wishlists that no amount of marketing can recover. Here is how to prepare your demo so the bugs that matter never reach players.

Pre-Demo Crash Testing

Your number one priority before Next Fest is eliminating crashes. Players will tolerate visual glitches, minor audio issues, and even some gameplay bugs in a demo. They will not tolerate a crash to desktop. A crash in the first five minutes means the player closes your demo and moves on to one of the hundreds of other games competing for their attention. They are not coming back.

Start by running your demo build on every hardware configuration you can access. If you only test on your development machine, you are testing on exactly one configuration out of the thousands your players will use. Borrow laptops. Ask friends with different GPU vendors to run the build. Test on machines with 8 GB of RAM, not just your 32 GB development rig. Test on integrated graphics if your game's minimum specs allow it.

Run your demo from a cold start at least twenty times without touching the code between runs. Intermittent crashes that happen one in ten launches are invisible during development when you are constantly restarting, but they will affect thousands of players at Next Fest scale. If you see a single crash in those twenty runs, investigate it before anything else.

Pay special attention to transitions: loading screens, scene changes, cutscene triggers, and the demo's end screen. These are the most crash-prone moments in any game because they involve the heaviest memory operations. If your demo crashes during a scene transition, the player loses everything up to that point and has no reason to try again.

Analytics Setup

You need to know what is happening inside your demo during Next Fest, not after it ends. Set up crash reporting and basic telemetry before you submit the demo build. At minimum, you need: automatic crash reports with stack traces, session length tracking, a funnel showing how far players get through the demo, and performance metrics including frame rate and memory usage on the player's hardware.

Bugnet's SDK integrates in minutes and gives you all of this out of the box. Crash reports arrive in real time with device information, stack traces, and session context. You can see immediately whether a new crash is affecting one player or hundreds, and whether it is hardware-specific or universal. This is the difference between panicking about a single report in your Discord and making an informed decision about whether to push a hotfix.

Set up a dashboard or monitoring page that you can check at a glance throughout the fest. You do not have time to dig through raw data during the busiest week of your marketing cycle. A simple view showing crash rate, average session length, and demo completion rate gives you the signal you need to decide whether things are going well or whether intervention is required.

Quick-Response Bug Workflow During the Fest

Next Fest is a week long, and you will receive bug reports in real time from players via Discord, Steam community forums, social media, and your crash reporting tool. You need a workflow that lets you triage and respond to these reports without derailing your entire week.

Designate one person as the bug triage lead for the duration of the fest. This person monitors all incoming channels and logs bugs in your tracker with a Next Fest priority tag. They do not fix bugs — they categorize them, assess severity, and decide which ones warrant immediate action versus which ones get logged for post-fest work.

Establish clear severity criteria before the fest starts. A crash affecting more than five percent of sessions is a hotfix candidate. A progression blocker that prevents completing the demo is a hotfix candidate. Everything else gets logged and addressed after the fest ends. Having these criteria defined in advance prevents emotional decision-making at 2 AM when someone posts a bug report with an angry Steam review attached.

Prepare a hotfix branch before the fest begins. Branch your demo build, make sure it compiles and runs, and keep it ready. If you need to push an emergency fix, you do not want to be setting up your build pipeline under pressure. Practice the full flow: make a trivial change, build, upload to Steam, verify the update. Know exactly how long each step takes.

Common Demo-Specific Bugs

Demos have a category of bugs that does not exist in the full game. These are caused by the boundary between demo content and full-game content, and they catch developers off guard because they do not appear during normal development testing.

Save data conflicts are the most common. If your demo and full game share the same save location, players who later buy the full game may encounter corrupted saves, phantom progress, or settings that do not match the full game's defaults. Use a separate save directory for the demo or explicitly clear demo save data when the full game first launches.

Demo scope boundaries cause subtle issues. If your demo lets players explore the first three levels but the underlying systems reference data from level four onward, you will get null reference crashes, missing assets, and broken quest states when the game tries to access content that does not exist in the demo build. Audit every system that could reference content outside the demo's scope.

End-of-demo transitions are frequently broken because they are unique to the demo and get the least testing. The player finishes the demo content — then what? If the answer is a black screen, a crash, or nothing at all, you have wasted the most valuable moment in your demo: the point where an engaged player is most likely to wishlist. Build a clear, polished end screen with a wishlist button and test it as thoroughly as you test any other transition.

Performance issues specific to the demo build are surprisingly common. Developers often build demos by disabling content in the full game rather than creating a clean demo branch. The result is a demo that loads unused assets into memory, runs update loops on hidden objects, and allocates resources for systems the player never interacts with. Profile your demo build independently — do not assume it performs the same as the full game.

Post-Fest Bug Triage

When Next Fest ends, you will have a list of bugs ranging from critical crashes to cosmetic nitpicks. The temptation is to immediately start fixing everything. Resist it. First, triage.

Sort your bugs into three buckets. The first bucket is bugs that also exist in the full game and need to be fixed before launch. These are your highest priority because they affect the product you are selling. The second bucket is demo-specific bugs that will not exist in the full game because the demo's scope boundaries or end screen caused them. These can be deprioritized unless you plan to keep the demo available permanently. The third bucket is feedback that is not technically a bug but reveals a design issue — players getting lost, misunderstanding a mechanic, or finding the difficulty too high. This feedback is gold for improving the full game.

Look at your telemetry data alongside the bug reports. Where did players drop off? If 60 percent of players quit in the first two minutes but you received no bug reports about that section, you have a design problem, not a bug problem. If players consistently crash at a specific point, fix that crash even if only a few players reported it — most players who crash do not file a report.

Preparing a Hotfix Pipeline

The lesson most developers learn from their first Next Fest is that they needed a faster hotfix pipeline. Building one before you need it is far less stressful than improvising during a live event.

Your hotfix pipeline should include: a branching strategy that isolates hotfix changes from ongoing development, a build process that can produce a new demo build in under an hour, a testing checklist that verifies the fix works without introducing new issues, and a deployment process for uploading to Steam and verifying the update is live. Document each step so that any team member can execute it, not just the person who set it up.

Test the entire pipeline before the fest by pushing a trivial change through it. Verify that the update appears correctly in the Steam client, that existing installations update properly, and that save data survives the update. Discovering that your hotfix pipeline is broken during the fest is a worst-case scenario that is entirely preventable.

"Next Fest is not the time to find bugs. It is the time to prove you already found them. Every hour spent preparing is ten hours saved during the event."

For more on building crash reporting into your game before a major event, see our guide on setting up a staging environment for game testing. If you are preparing your first demo, our article on the game release QA checklist covers the broader stability and performance checks that apply to demos as well as full releases.

The best demo is the one that works flawlessly for every player, every time. Preparation is what makes that possible.