Fun game, and a technical miracle when it released first on Playstation 2.
Many of the early PS2 games suffered from image quality, aliasing and blurry texture issues, but then this game comes out with smooth as silk edges, 60 fps framerate, great textures with specular highlights and jaw-dropping water physics.
BGDA's programmer (Ezra Dreisbach) had a lot of experience working with the complex architecture of the Sega Saturn (see: Lobotomy Software and their ports of Quake, Powerslave, Duke Nukem 3D to the Saturn) and this helped him take advantage of the PS2's vector units, whereas other developers had been trying to brute-force PS2 titles using the CPU.
(Would love to see DF Retro do an episode on BGDA!)