Arctic Adventure: A Lost 1981 TRS-80 Adventure Game
https://www.arctic81.com/

>A LOST 1981 TRS-80 ADVENTURE GAME (SLIGHTLY REMASTERED FOR THIS CENTURY)
>
>The image below is not a screenshot. It's a playable version of ARCTIC ADVENTURE that works right in your browser, assuming you have a physical keyboard.
>
>Go ahead, press ENTER. then play. I'll wait.

I have not played yet, YMMV.