1995 – PlayStation Control Pad: Shaping the Future
1997 – Dual Analog: More Power to Your Thumbs
1998 – DualShock: A Shock to the System The first PlayStation controller with vibration feedback and the last to be released for PlayStation, the DualShock let you physically feel the force of a Tekken 3 beatdown. Some developers realised that having two motors allowed for stereo vibration feedback; the helicopter scenes in the original Metal Gear Solid were particularly impressive in this respect.
2000 – DualShock 2: Analogue Accuracy
2006 – Sixaxis Controller: Look… No Wires
2007 – DualShock 3: Return of the Rumble
2013 - "Share" button as one of the biggest features of the DualShock 4, allowing players to easily send tidbits like video clips and screenshots to places such as Ustream, Facebook and, naturally, the firm’s own PlayStation Network. Has enhanced rumble capabilities.