What are the key differences between the open world of san andreas and modern ro?

The search query asks for key differences between the open world of San Andreas and modern RO, but the verified evidence provided is solely a Wikipedia description about Wikipedia itself as an encyclopedia. There is no information about San Andreas (which could refer to Grand Theft Auto: San Andreas or another game) or modern RO games. Without any factual basis about these games' open world designs, mechanics, or features, I cannot provide an informed comparison. The evidence does not contain any details about game environments, player experiences, or relevant gaming content that would allow me to answer this question accurately.