Elias vs SoLoud

Elias 4 is game-audio middleware and a sound engine for interactive soundscapes and adaptive music. Elias Studio gives composers and sound designers visual scripting for sample-perfect audio graphs combining logic, game parameters, playback, and DSP. Its music system supports instrument and track rules, motifs, stingers, automatic loops, random segments, and musical transitions. Spatialized 3D audio and processing such as filters, compressors, and reverbs are included. While a game runs, users can edit patches, replace sound files, and mix without rebuilding or using sound banks. Unity and Godot integrations are provided, and custom or other engines can be integrated. Listed runtime targets include PC, Mac, PlayStation 5, Nintendo Switch, Nintendo Switch 2, iOS, and Android. Elias is written in C and C++, supports Python tooling and automations, and offers source-code access by separate agreement at higher license tiers. Licenses are per game; console releases cost extra per platform, while same-game DLC is covered. Explorer Standard costs €5,850, paid once, and Colonizer Premium costs €15,000, paid once. A free evaluation version is available by request.

SoLoud is a free, portable C/C++ audio engine for games, built around a fire-and-forget playback interface. Playback handles let developers adjust volume, pan and relative speed. The engine includes multiple voices, faders, real-time filters, mixing busses, gapless looping, queued sounds and atomic operations for several sounds. It supports 3D positional audio and up to eight surround speakers.

Supported sources include several WAV variants, Ogg Vorbis, MP3, tracker formats and emulator sources. The package includes speech synthesis and an Sfxr sound-effects synthesizer. SoLoud runs on Windows, Linux, macOS, Android and the web through Emscripten, with backends including SDL/SDL2, MiniAudio, ALSA, JACK, OpenAL and WASAPI. A C API DLL provides access from environments including Python, Ruby, C#, BlitzMax and GameMaker Studio. Its ZLib/LibPNG license permits commercial use, modification and redistribution subject to attribution and source-notice conditions. The project notes limited engine integration and no artist tools.