Indiana Jones and the Staff of Kings was originally released in 2009 for the Nintendo Wii, PlayStation 2, PlayStation Portable, and Nintendo DS. While a PC version was famously in development by LucasArts using the advanced Euphoria physics engine, it was ultimately cancelled. Because an official PC version does not exist, finding a legitimate free download link for a native PC port is impossible. The Reality of the PC Version
canceled
Any "free download links" for a PC version of this specific title found online are likely unofficial or potentially harmful, as the original high-end version planned for PC, PlayStation 3, and Xbox 360 was by LucasArts during development.
Accessing the Game Legally
If you are looking for authentic Indiana Jones adventures available natively on PC, you can find them on Steam or GOG :