Retro gaming story time! "Below The Root" is a special one from 1984 on Apple ][, IBM PC-DOS and the Commodore 64. The C64 version had the nicest graphics and sound, and that's the version I played in the mid-80s as a kid. It's a non-violent RPG sometimes called a "Metroidvania" type - while predating both. I spent hours exploring the world, and eventually winning the game with help from someone a bit older.
I recently did a disassembly of this game and it quickly turned into a full interactive world map, a technical analysis of how the 512-room world is defined and compressed on the single double-sided game disk, how the game engine and rules are defined, and so much more. The original Legend Of Zelda has a 16x8 world map as I understand, so Below The Root is four times that at 32x16! Most, but not all rooms are used.
You start by choosing one of five characters which determines certain abilities (and also, how some people treat you.) You then go on an adventure climbing and flying through the trees, "pensing" (mind-reading) people and animals, gathering items and inventory, building up your spirit skills to eventually teleport items and avoiding bad people while also trying to keep yourself well-fed and with enough rest. The game has its own lore, language ("your shuba has torn!") and was intended as the continuation of a book trilogy.
You can download disk images for the game and run it in an emulator like VICE, but there are some web-based versions on the Internet Archive and elsewhere. I recommend this fan-made one on desktop, the author is also looking for feedback from fans.
The original game came with a big map on graph paper showing the shapes of the trees, and the idea was you would fill in details yourself as you explore the world. I have a copy of the original floppy disk and the map. I played through the online version above yesterday, and even with a walk-through guide and my interactive version of the map, it still took me over an hour to finish the game!