Platform Specific Optimization and Constraints Questions
Understand optimization requirements for different platforms: Mobile (iOS, Android) with battery, thermal, and memory constraints; Console (PS5, Xbox Series X) with specific hardware; PC with varying hardware; Web with bandwidth and performance constraints. Discuss target frame rates: 60 FPS console/PC, 30-60 FPS mobile. Discuss how you'd scale game quality for different platforms: resolution, particle count, draw distance, physics precision. Understand platform-specific tools: Xcode profiler for iOS, Android Profiler for Android, console profiling tools.
MediumSystem Design
94 practiced
Design a resource streaming system for textures and levels in a game targeting mobile and web. Describe asset prioritization, memory thresholds for loading/unloading, compression/decompression strategies (progressive mipmaps, compressed streaming), and fallback behavior during slow network conditions.
MediumTechnical
52 practiced
Describe a practical method to measure and set thermal budgets for mobile games. Which tools and device sensors would you use, what heuristics would trigger throttling actions (e.g., frame-rate cap or resolution reduction), and how would you surface thermal state to players or logs?
HardSystem Design
56 practiced
Design a telemetry and remote-config system to collect platform-specific performance metrics (frame-time histograms, memory usage, thermal events) and remotely enable/disable features for A/B testing. Discuss sampling strategies, data volume limits, privacy considerations, and a safe rollback plan for feature toggles.
MediumTechnical
48 practiced
How would you reduce CPU cost of the physics simulation across platforms while keeping gameplay consistent? Discuss strategies such as adjusting fixed timesteps per platform, substepping, simplifying collision geometry, reducing solver iterations, and visual interpolation techniques.
MediumSystem Design
52 practiced
Design a cross-platform dynamic resolution scaling (DRS) system for a Unity-based game that targets consoles (60 FPS), PC (60 FPS), and mobile (30-60 FPS). Describe inputs (frame-time history, thermal state, battery level), control algorithm options (heuristics, PID), min/max bounds, UI handling, and how to ensure post-processing and UI remain legible when resolution changes.
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