Baldur's Gate 3 Script Extender vs Ultimate ASI Loader

Baldur's Gate 3 Script Extender adds Lua and Osiris scripting support for mods in Baldur's Gate 3. A mod can enable Lua with a feature flag and load bootstrap scripts for the client and server. The extender keeps separate Lua states for the game server and each client, and its console can run Lua code and registered console commands. Configuration options provide Lua and Osiris debugger interfaces with configurable listening ports, and logging options can write Osiris activity, runtime output, story compilation and compilation errors to files. An EnableAchievements option can re-enable achievements in modded games. SendCrashReports defaults to true and uploads minidumps to a crash report collection server after a crash. Installation involves extracting DWrite.dll into the game's bin directory. The extender updates when the game launches by downloading and applying an update. It supports Windows and Linux via Proton, but does not run on game versions older than patch 5; new versions target the latest game version. It is free to obtain under a license that includes the MIT License and a Commons Clause restriction on selling the software or substantially derived products and services.

Ultimate ASI Loader is a free Windows proxy DLL that loads custom .asi libraries into a game process. It supports games using Win32 or Win64 libraries such as Direct3D, DirectInput, audio, and XInput. Installation usually means placing the DLL in the game directory as dinput8.dll, or renaming it to another supported DLL name. ASI files can be stored in the game root, scripts, plugins, or update folder. When needed, global.ini belongs in scripts or plugins, and the selected DLL name can also serve as the INI filename. The update folder can hold replacement game files while originals remain untouched; removing that folder reverses the change. The loader can forward many original DLLs after renaming them Hooked.dll, and d3d8to9 support is available when it is named d3d8.dll. Crash minidumps and logs are created when a CrashDumps folder exists beside the loader. Win32 and Win64 builds are available, including smaller NoPDB archives. The repository lists an MIT license.