The steam remasters are incredibly faithful to the originals - right down to the timing and flow of the turn-based combat. Makes me wonder if they are emulating the original code somehow.
https://www.dosbox.com/comp_list.php?showID=188&letter=B
... which is available for many platforms, including Windows and Linux:
https://www.dosbox.com/download.php?main=1
although the latest version of DosBox seems to be from 2019, so maybe others can suggest a more actively-maintained emulator.
There are a few other ones as well. DOSBox Staging is one. Magic DOSBox seems to be the most popular on Android. There is some iOS port as well.
They remastered all three of the first Bard's Tale games a few years ago and released them on Steam with many quality of life improvements-- I bought the set without a second thought even though I know I will probably never take the time to play it all the way through. I've spent a few dozen hours on it so far, though.
If you purchase Bards Tale 4 you get the remastered 1,2, and 3 for free.
I have played BT 1 every year or so since the late 80s.
It was a masterful blend of RPG, dungeon crawl, and puzzles and had a memorable soundtrack.
https://www.youtube.com/watch?v=ru5kg35dNso
Having a bard in your party let you choose a soundtrack and their songs brought magical effects. For example, the Rhyme of Duotime let your party attack more frequently in combat: https://www.youtube.com/watch?v=_oR4j7w4FIY
BT3 is available on the Internet Archive: https://archive.org/details/msdos_The_Bards_Tale_3_-_Thief_O...