How to Add Structured Logging to Your Game

A wall of unstructured prints is useless when something breaks. Structured logs are searchable and actionable. Here is how to switch.

How to fix it

1. Use levels consistently

Route everything through one logger with clear debug/info/warn/error levels so you can filter to what matters.

2. Attach structured fields

Log key-value context (player id, scene, build) instead of baking values into freeform strings so logs are queryable.

3. Make production parseable

Emit production logs in a structured format a backend can index, so you can search across players and sessions.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.