The PlayStation 2 was released in Japan on March 4, 2000, meaning the console is now fifteen years old. With more than 150 million units sold to date, it's the best-selling home system in history, helping "PlayStation" become a household name across the world.

The official PlayStation Australia Twitter account has released a series of images celebrating the PS2's birthday. You can see some of them below.

In other recent news about the PS2, retailer GameStop this week once again started accepting trade-ins for the system, citing "high" demand.

We've already told you about some of our favorite PlayStation memories over the past two decades, but be sure to give us your thoughts in the comments below. The PlayStation brand continues to grow, as just yesterday, Sony announced that the PlayStation 4 has now sold an incredible 20.2 million systems worldwide.

Sony unveiled PS2 at Tokyo Game Show in 1999 #HappyBirthdayPS2 pic.twitter.com/zIFCHH7rKV — PlayStationAustralia (@PlayStationAU) March 4, 2015