Is Blur two player?

Could you elaborate on whether the game "Blur" is designed specifically for two players, or if it supports a larger multiplayer capacity? I'm curious to know if the game's mechanics and gameplay revolve around a two-player competitive setup, or if it offers more flexibility in terms of the number of players that can participate. Additionally, is there a single-player mode available in the game? Understanding these details would help me determine if "Blur" is suitable for my gaming preferences and the number of players I typically have available.