Novint Falcon introduced an interesting haptic gaming controller. Most of gaming controllers adopt vibration motor to give feedback to users. Unlike vibration, Novint Falcon controller can generate directional force feedback that can provide users with more realistic gaming experiences.
Current product is Pistol Grip, which is shown below. As shown in the figures, pistol-shaped handle is just attached to Novint Falcon haptic device.
The company also considers different handles for different games.
A review of the Novint Falcon can be found at Wired.com
Danny Dumas, "Review: Novint Falcon Gaming Controller Takes Aim on Your Mouse," Wired.com, Sept. 12, 2008.