UnityEX is a popular choice among modders for its ability to open and "re-import" modified assets back into game archives like .assets and .bundle files.

If you are looking for alternatives, you might also consider the Unity Assets Bundle Extractor (UABE) or its updated forks for newer game versions.

UnityEX is a powerful utility designed for extracting and manipulating files within Unity engine games. While a free version exists for basic tasks, the (often bundled with the "Advanced" edition) is a premium version required to support newer game versions, specifically providing essential compatibility for titles built on Unity 2020 and later . What is UnityEX Ultimate?