It's very similar to styles of generating lairs/dungeons in many TTRPGs. A lot of them come with various tables/dice rolls to help build a layout and then subsequent tables to give a general prompt for what goes in said rooms. It's an extremely satisfying routine, as you're not 100% beholden to every dice roll, but the dice rolls help prime the creative juices and give constructive constraints to the process.

I highly recommend trying it out for yourself!

Playing hexcrawl RPGs like Twilight 2000 with my groups has been great. The physical edition came with a custom deck of playing cards that had encounters and randomization tools printed on them - I can literally just draw a card and immediately create an encounter for the players.