A bit off-topic, but not too much: an old videogame from the mid 90s called Master of Magic (his author, Andy Barcia, also created Master of Orion, 40+ years old in the thread would probably know at least one of these two masterpieces) at some point got a big quasi-remake based on (allegedly) the availability of the source code, it's called Caster of Magic [0] and it's essentially a huge mod that changes a ton of things in the game, and fixes several bugs.
I was a big MoM fan when I was a kid and I followed this development with a lot of curiosity.
I found it interesting that a game which is now more than 25 years old managed to get a thriving modding community, given that modding games wasn't really a thing long ago.
By the way, there's a proper remake in the works, coming out in a couple of months.