The Sims is a perfect example of how a Franchise can stay strong after 10 years. Sure, the gameplay mechanics maybe same as it once was back in 2000 but I've witnessed how the game has evolved in the past 10 years. It's not just build your house and sim, it's deeper than that now. You actually build a connection with your sim. You really feel obliged to fulfill their wishes and goals in life.
I've been playing the old Sims 1 with my sister in my elementary days and now I'm playing the Sims 3 on my console 10 years later when I'm in college. It's a franchise that appeals to everyone. Young and old, male or female. Everyone will find something they like in The Sims. That's why it's my most treasured game in the gaming industry. XP