The absolute best method is to abandon the physical disc. GOG.com (Good Old Games) sells a DRM-free version of City Life 2008 . When you buy it from GOG for $2.99, the serial code is automatically applied via their launcher.
Focuses on balancing six subcultures (e.g., Elites, Suits, Blue Collars) to ensure city prosperity. GamersGate for managing subcultures or finding Steam keys for this edition? City Life: 2008 Edition - Redump.org city life edition 2008 serial code better