Before comparing, let's define the term. In video games, "assets" refer to all the non-code elements that create the game world. For GTA: Vice City Stories, these include:
Palm trees and grass meshes received a massive overhaul on the PS2. The PSP version uses low-poly, 2D billboard textures for distant trees to preserve system memory. The PS2 utilizes fully fleshed-out 3D foliage assets that react with greater fluidity to weather states.
While both versions share the same core map, the assets were handled differently to accommodate hardware limitations. Rockstar Leeds (PSP) and Rockstar Vienna/Edinburgh (PS2) made specific choices regarding geometry and textures.
Main characters like Victor Vance, Lance Vance, and Martinez received high-polygon overhauls for cutscenes and gameplay. Finger geometry was separated on the PS2, whereas the PSP models frequently featured "clumped" or fused fingers to save polygons. Facial textures were mapped onto more complex geometric meshes, allowing for more expressive animations. Vehicle Refinements
If you want to explore the game files further, I can give you more details.
Unlocking the Neon: A Comprehensive Guide to GTA Vice City Stories PSP/PS2 Assets
The PS2 version isn’t a direct 1:1 port; Rockstar added extra structural assets to populate the city.
