Evolution of DualShock controllers

The DualShock controller has been in the market since late 1997 in Japan and early 1998 in the US. This core controller sculpt has been used upon four generations of consoles and have improved more and more over the years. Now the latest DualShock 4 is the most advanced and better controller of the four. DualShock 2 is compatible with PlayStation and PlayStation 2; DualShock 4 is compatible with PlayStation 3 and PlayStation 4. Here's to 20 years of PlayStation.