Audio Formats for Game Developers
Game audio has unique requirements. Files must be small for distribution, fast to decode for real-time playback, and high enough quality to sound good through gaming headsets and speakers. Format choice directly affects your game's performance and download size.
Recommended Formats by Engine
Unity: OGG Vorbis for compressed audio. WAV for short sound effects that need instant playback. Unity decompresses OGG at load time or streams it from disk. Unreal Engine: OGG Vorbis is the primary compressed format. WAV for raw assets. Unreal handles conversion in its asset pipeline. Godot: OGG Vorbis for music and longer sounds. WAV for short effects. Godot imports both natively. Across all engines, the pattern is the same: WAV for short, instant sounds. OGG for music, dialogue, and ambient tracks.
WAV for Sound Effects
Short sound effects — gunshots, footsteps, UI clicks — benefit from WAV format. They load instantly without decoding overhead. A gunshot sound is maybe 100 KB as WAV. The file size penalty is negligible. The performance benefit is real: no CPU time spent decoding during gameplay. For games with hundreds of short sound effects, the total WAV size is still manageable. Keep them at 44.1 or 48 kHz, 16-bit, mono for most effects. Stereo only when spatialization is not needed.
OGG for Music and Dialogue
Game music tracks are minutes long. OGG Vorbis compresses a 50 MB WAV track to 5 MB at quality 5. For a game with a 60-minute soundtrack, that is the difference between 600 MB and 60 MB in your build. OGG decoding is lightweight — modern hardware handles it without noticeable CPU impact. Stream music from disk rather than loading entire tracks into memory. Dialogue lines compress well in OGG. Hundreds of voice lines become manageable in download size.
Audio Asset Pipeline
Record and edit in WAV at 48 kHz / 24-bit. This is your master. Export final assets as WAV for effects and OGG for music. Store masters in your version control. Let the engine import and optimize. Some teams use FMOD or Wwise middleware — these tools have their own format pipelines and may use proprietary compressed formats internally. Follow the middleware documentation for optimal settings.
Platform-Specific Considerations
Mobile: Aggressive compression matters. Use OGG at quality 3-4 for background music. Keep total audio size under 50 MB for reasonable app size. Console: More storage budget. Higher quality OGG (quality 6-7) or even WAV for critical audio. PC: Flexible. Most PC gamers have fast drives and plenty of storage. Quality 5-6 OGG is the sweet spot. Web/HTML5: OGG for Chrome and Firefox. MP3 as fallback for Safari. Provide both formats and let the browser choose.