what was really cool were the few games that would give realistic* music and speech from the internal motherboard speaker. No daughterboards or external speakers required. This was 386 era, I think.
* realistic as much as could be from that tiny internal speaker and 8 bits of data.
Yes, I remember these! Countdown And Tex Murphy: The Martian Memorandum come to mind. I remember being amazed at the sounds suddenly coming out of our internal computer speaker. It even had something close to speech!
The manual also came with some info on making the sound even better using some alligator clips, but that went waaaay over my little head at the time :)