At the WOzFest/// gathering on 26/4 there were two hardware and a software announcement for Apple //gs users.
The first is the 4play card that allows support of up to 4 digital joysticks for //gs games. Secondly, if you’ve got 4 Atari joysticks hooked up, then you’ll need a game to take them for a spin. Enter KABOOM! v1.02
. . . . and then you’ll want sound, sound, and more sound, so now there is the 4soniq card providing 4 channel support for the //gs, and the best thing about the 4soniq card is if you pair two of them, you get EIGHT channels!
WOzFest/// WOzFest /// Approaches! | the europlus zone
4play: http://lukazi.blogspot.com.au/2016/04/apple-ii-4play-joystick-card.html
KABOOM! Ninjaforce - Products - Kaboom
4soniq: More information and link later.
AppleIIoz: http://www.appleiioz.com/appleiioz/Apple_IIoz/News