These companies don’t give a shit about your passion. They will shut you down or sue you. Put that effort into making your own original game and reap the benefits of your passion.
It's the same reason people make fan art or fan fiction. it's a way to develop technical skill without starting from scratch with creative skills you may have no interest in.
It's totally understandable why people do this, but my advice would be stick to small mods.
As soon as an add on is large enough to be a DLC, or even its own game, big companies are 100% coming after it. Especially if it is a popular game and it gets in all the gaming press like this.
Or make them quietly and release them basically complete, or release them anonymously (and actually anonymously, not via a pseudonym on a website like github where you can be easily tracked down)
But at that point I probably wouldn’t bother either
Trouble is, in addition to it likely still being taken down, or you being sued still, that also means you can't ask online for assistance in building it.
These things are rarely one person working on it. They get the word out to find more modders who want to help.
Releasing something anonymously is not going to prevent a company from getting the content removed from the web server. Hosting companies have to act according to local laws, and if a company can abuse this (like DMCA) then releasing stuff anonymously is not going to change anything
Some people who make these do it just for fun and to learn game development. Getting shut down is actually a badge of honor, means the company thought it was good enough to be a threat.
Trust me, I've played GTA Online since the day it launched (or the week afterwards rather since the servers were really shit at launch), they only ever did anything about cheaters if they cheated money.
I remember all the early money exploits and car duplication glitches, those were usually hotfixed in a day while other (game-breaking) bugs existed for years...
I'm hoping they do something actually effective against the cheaters, so far the only thing they havd accomplished is screwing over their Linux users. I went to pick the game up again the other day and found it no longer functions for multiplayer under proton because they are too scared it'll be used for hacking. Meanwhile everyone and their mother is removed that thd cheating still exists so obviously Linux wasn't the issue.
Woops, Mutahar accidentally indirectly killed it by giving it coverage.
He covered it about two weeks ago trepedatiously, thinking the project was awesome, but stating that Rockstar could kill the whole thing if they became aware of it...
"Due to the unexpected attention that our project received and after speaking with Rockstar Games, we have decided to take down the Liberty City Preservation Project."
The above linked almost half million view video is almost certainly the 'unexpected attention our project recieved', not the inline linked tweet IGN provided with less than 300 retweets.
What is the legal reasoning for this? From what I've read about this mod, you have to already own both GTA 4 and 5, kinda like the Tale of Two Wastelands mod for Fallout 4, so it's not like they were redistributing files they don't own.
I mean, that's generally the answer but how do they gain here? Again, since it requires both GTA 4 and 5, wouldn't it be more likely to drive sales of both from people wanting to play the mod, thus giving Cockstar more revenue? At least Nintendo's inane BS makes sense, trying to stop emulation because you "need" emulators to play pirated Nintendo games. Taking down this mod, or the VR mods, doesn't make a lick of sense.
Think the “right to repair” conversation. When you buy something, their argument is you don’t own it. You can’t alter it, you can’t do with it what you want for your own use. It’s theirs and you’re only allowed to look at it in its current form. If it’s broken? It’s your problem. If you fix it, we’re gonna make it your problem. That kinda thing.
There doesn't really have to be one. There companies have deep pockets and the legal process itself is long and costly. They know you might win, but they also know you can't afford to slog through the process to actually get an outcome.