Links 386 had a nice feature back in the times: even if you did not have a sound card and just a PC speaker, Links managed to get audible speech and noises out of it. This was a nice technical hack, and if your PC was a bit too slow, just moving the mouse already distorted the sound. But it was really cool then.
That was the original Links - Access were ahead of the rest and they (well, Brent Erickson who later went to design Noctropolis) invented that "Realsound" technology to output digitalised sounds through the pc speaker. Links386 was the one who went all in for the SVGA, but sound cards were already very popular in 1992 (in 1992 games started to be released in CDROM while the last ZX spectrum games were released... weird times, the early 90s)