The original 3D platformer is not officially available for direct download on modern PlayStation or Xbox hardware, though some versions are playable via backward compatibility if you own the physical disc.
The original classic is more difficult to acquire digitally for modern systems: Download SpongeBob Squarepants: Battle for Biki...
Note that the original PC release was a point-and-click adventure rather than the 3D platformer found on consoles. It is sometimes available on legacy sites like GameFabrique . The original 3D platformer is not officially available
For a look at the updated visuals and gameplay improvements in the modern version, check out this review: check out this review: