Game Developer Interview Questions for AI Training Work

I reduce simulation fidelity selectively, like lowering collision detection precision for objects far from the camera or off-screen, rather than uniformly reducing quality everywhere. Fixed timestep physics with interpolation for rendering also keeps the simulation stable on variable frame rates without the game feeling different depending on hardware.

I build multiple levels of detail for key assets and use platform-specific texture resolution and polygon budgets rather than a single asset quality tier for everything. Aggressive culling of off-screen and distant geometry also matters more than raw asset optimization once a scene has enough objects, since rendering things the player can't see is pure waste.

I abstract input handling behind a platform-agnostic action layer, so gameplay logic responds to abstract actions rather than specific input devices, and each platform maps its own controls to those actions. This avoids scattering platform-specific input checks throughout the gameplay code and makes adding a new platform later far less disruptive.

I look for floating point precision issues and frame rate dependency first, since intermittent physics bugs are frequently tied to variable delta time or edge cases in collision detection at high velocity. Logging the exact simulation state right before the failure, rather than trying to reproduce it live, is usually the fastest way to catch an intermittent case.

Fine surface detail that doesn't affect the silhouette or gameplay-relevant collision is a strong candidate for texture baking, like normal maps for small surface bumps, while anything that changes the model's outline or needs to interact physically needs real geometry. The test is whether removing the geometric detail would be visually or functionally noticeable from expected play distances.

I'd check for platform-specific differences first, like memory limits, shader compilation differences, or API version mismatches, rather than assuming the code itself is universally broken. Getting a crash log or stack trace from the actual target platform is the priority, since debugging blind based on dev machine behavior alone rarely finds a platform-specific issue.

I'd separate the technical correctness of the simulation from the feel, since a physically accurate simulation doesn't automatically feel good in a game context. I'd iterate on tunable parameters like gravity scale, response curves, and feedback timing, testing changes against actual player reactions rather than trying to reason about feel purely from the physics numbers.

I'd audit the codebase for platform-specific assumptions baked directly into gameplay logic, like hardcoded input handling or file paths, and extract those into an abstraction layer before attempting to build for the new platform. Trying to patch platform support in ad hoc, without first isolating the platform-specific code, usually creates more bugs than it fixes.

A control scheme designed around precise mouse input didn't translate well to touch, and rather than trying to force the same interaction pattern onto mobile, I redesigned the core interaction for that platform specifically. It meant more divergent codepaths than originally planned, but the alternative was a mobile experience that felt broken.

A hero character model was pushing the polygon budget high enough to affect frame rate in crowded scenes, so I worked with the art team to identify which detail was actually visible at typical camera distances and reduced the rest. The reduced model retained the visual impact that mattered while getting the game back within its performance target.