The Cyber Stick is considered to be the ultimate controller for the X68000 series and was manufactured by SHARP (CZ-8NJ2) and Micomsoft (XE-1AJ). It can be used as digital or analog joystick. Not only does it work on the PC98 series, X68000, and FM Towns, it also works on the Sega MegaDrive/Genesis. You can swap the left and right sticks around as well.

The following list of games which support analog mode was compiled by *SuperDeadite* and taken from http://www.gamengai.com/forum/viewtopic.php?f=2&t=3019

Afterburner Dash Yarou Knight Arms Metal Sight Neural Gear Overtake Space Cruiser Star Luster Super Hangon Syvalion Thunder Blade