How do I know if my game isn't handling errors well?

Look at whether errors crash the game, whether failures are catastrophic, and whether errors are contained. Signs: crashes from unhandled errors (conditions the code didn't anticipate, a null, a failed operation, an unexpected value, crashing the game instead of being handled); lost progress when something goes wrong (a failure erasing the player's progress instead of failing safe) and catastrophic failures (the game failing in damaging ways rather than recovering gracefully); and errors propagating instead of being contained (a problem in one place cascading into crashing the whole game). To diagnose, capture crashes with stack traces (showing the unhandled errors and how they propagate) and look at how the game fails (does it lose progress? fail catastrophically? cascade?). If many of your crashes are unhandled errors that could have been caught, failures lose progress or are catastrophic, or errors propagate uncontained, your game isn't handling errors well. Good error handling turns potential crashes into recoverable hiccups (catching and recovering from conditions that would otherwise crash) and fails safe (protecting progress, letting players recover, when something does go wrong) and contains errors (so a single failure doesn't crash everything). So poor error handling shows as: unhandled errors crashing the game (instead of being caught), catastrophic failures (instead of failing safe), and propagating errors (instead of being contained). So you know your game isn't handling errors well from these signs, and the fix is to improve error handling: handle errors gracefully (catch and recover from conditions that would crash, turning them into recoverable situations), fail safe (protect progress and let players recover when something goes wrong, so failures aren't catastrophic), validate inputs defensively (so unexpected input is handled, not crashing), and contain errors (so a failure is caught locally, not cascading into crashing the whole game). Capturing crashes with stack traces (to see the unhandled errors, how they propagate, and where the game fails unsafe) is how you find the error-handling gaps, so you can add the handling (guards, recovery, fail-safe, containment) that turns the crashes and catastrophic failures into recoverable hiccups.

How does error handling prevent crashes?

By catching and recovering from conditions that would otherwise crash the game, an unhandled error (an unexpected condition the code doesn't account for) typically crashes, while handled gracefully it can be recovered from without crashing. Many crashes come from errors the code didn't anticipate or handle: a null where something was expected, a malformed input, a failed operation, an out-of-range value, and if the code assumes these can't happen and doesn't handle them, hitting one crashes the game. Error handling addresses this by anticipating that things can go wrong and handling them: checking for and gracefully dealing with the absent, the malformed, the failed, and the unexpected, so that instead of crashing on an error, the game recovers, falls back, or fails safe. For example, validating input before using it (so malformed input is rejected rather than crashing the code that processes it), handling failed operations (so a failure is recovered from rather than crashing), and guarding against null and unexpected values all turn potential crashes into handled situations. The goal isn't to handle literally every possible error (some conditions genuinely warrant failing) but to handle the recoverable ones gracefully so they don't crash, and to fail safe (protecting progress, letting players recover) when something does go wrong, so even unhandled errors cost the player little. Combined with capturing the errors that do occur from the field (so you can see and fix the conditions slipping through), good error handling significantly reduces crashes by ensuring the unexpected conditions that real-world use produces are handled rather than crashing the game. So error handling prevents crashes by catching and recovering from the conditions (unexpected inputs, failed operations, nulls, out-of-range values) that would otherwise crash the game, turning them into recoverable situations, and by failing safe when something does go wrong (so even the failures cost the player little). Since many crashes are unhandled errors (conditions the code didn't account for), adding error handling (guards, validation, graceful recovery, containment) directly prevents those crashes by handling the conditions instead of crashing on them. This is a major part of building a stable game: capturing crashes from the field (to see which unhandled errors are crashing the game) and adding the error handling to catch and recover from them turns the crashes into handled situations, reducing your crash rate. So error handling prevents crashes by handling the unexpected conditions that real-world use produces (rather than crashing on them), which, since many crashes are unhandled errors, directly reduces crashes, especially when you use field crash data to find the specific unhandled errors crashing your game and add the handling for them.

How do I handle errors better in my game?

Handle errors gracefully so they don't crash, fail safe so failures aren't catastrophic, validate inputs defensively, and capture errors so you can find and handle them. Handle errors gracefully where you can: catch and recover from conditions that would otherwise crash the game (a null, a failed operation, an unexpected value), turning potential crashes into recoverable situations the player barely notices, this prevents many crashes from ever happening. Fail safe when something does go wrong: protect the player's progress and let them recover, rather than losing their work or getting stuck, so an error costs the player little (a recoverable hiccup rather than a catastrophe), failing safe (e.g. keeping a good save intact rather than corrupting it, not trapping the player) is what limits the damage of the errors that do occur. Validate inputs and external data defensively: don't trust them, since unexpected or malformed input is a common error source, and defensive validation prevents many errors before they occur (rejecting bad input rather than crashing on it). Contain errors: catch and handle them locally so a single failure doesn't cascade into crashing the whole game (especially important for things like plugin failures, network errors, and untrusted input). And capture the errors that do occur from the field: so you can see and fix the conditions that slip through your handling (the unhandled errors crashing the game), continuously improving your error handling by finding the specific gaps. So you handle errors better by handling them gracefully (catching and recovering from conditions that would crash, so they don't), failing safe (protecting progress and enabling recovery when something goes wrong, so failures aren't catastrophic), validating defensively (so unexpected input is handled, not crashing), containing errors (so a failure doesn't cascade into crashing everything), and capturing errors from the field (to find and handle the gaps). The key is to anticipate that things can go wrong (real-world use produces unexpected conditions) and handle them, catching and recovering from the recoverable ones (so they don't crash), failing safe on the rest (so they cost the player little), and containing them (so they don't cascade), which turns potential crashes and catastrophic failures into recoverable hiccups. Capturing crashes and errors from the field (with stack traces showing the unhandled errors and how they propagate) is what reveals your error-handling gaps (the conditions crashing the game, the failures losing progress, the errors cascading), so you can add the handling (guards, validation, graceful recovery, fail-safe, containment) to address them, continuously improving how your game handles errors. So handling errors better combines defensive design (graceful handling, fail-safe, validation, containment) with field error capture (to find the gaps and fix them), which makes your game robust against the unexpected conditions that real-world use produces, turning crashes and catastrophic failures into recoverable hiccups.

Signs Your Game Is Not Handling Errors Well

Quick answer: Watch for crashes from unhandled errors, lost progress when something goes wrong, catastrophic rather than recoverable failures, and errors propagating instead of being contained. Good error handling turns crashes into recoverable hiccups.

How your game handles errors determines whether an unexpected condition becomes a crash or a recoverable hiccup. Here are the signs your game is not handling errors well.

Crashes From Unhandled Errors

A sign is crashes from unhandled errors, conditions the code didn't anticipate or handle (a null, a failed operation, an unexpected value) crashing the game instead of being handled. If many of your crashes are unhandled errors that could have been caught and recovered from, the game isn't handling errors well.

Bugnet captures crashes with stack traces, so unhandled errors crashing the game are identifiable. Crashes from unhandled errors are a sign of poor error handling, and capturing the crashes with stack traces (showing the unhandled error and where it occurred) reveals which conditions are crashing the game unhandled, so you can add the handling (a guard, a recovery) that would have turned the crash into a recoverable situation.

Lost Progress and Catastrophic Failures

Signs include lost progress when something goes wrong (a failure that erases the player's progress instead of failing safe) and catastrophic failures (the game failing in damaging ways, lost progress, getting stuck, crashing hard, rather than recovering gracefully). Both signal the game fails unsafe, not protecting the player when errors occur.

Bugnet captures crashes with context, so failures that lose progress or fail catastrophically are identifiable. Lost progress and catastrophic failures are signs the game isn't failing safe (handling errors well means failing safe, protecting progress, letting players recover), so capturing these failures (the crashes that lose progress, the catastrophic ones) shows where the game fails unsafe, so you can make those failures safe (protect progress, enable recovery).

Errors Propagating Instead of Being Contained

A sign is errors propagating instead of being contained, a problem in one place cascading into crashing the whole game, rather than being caught and contained locally. If errors aren't contained (a single failure takes down the game), the game isn't handling errors well, lacking the defensive containment that limits a failure's blast radius.

Bugnet captures crashes with stack traces, so propagating errors are traceable to their source. Errors propagating instead of being contained are a sign of poor error handling, and capturing the crashes with stack traces (showing the error propagating from its source to the crash) reveals where errors aren't contained, so you can add the defensive handling (catching and containing the error) that prevents a single failure from crashing the whole game.

Watch for crashes from unhandled errors, lost progress when something goes wrong, catastrophic rather than recoverable failures, and errors propagating instead of being contained. Good error handling turns crashes into recoverable hiccups.