So I double checked on google and past second page in this sub-forum (was a bit lazy, but thought hey - threads seem to preceed in older date stamps) and found surprisingly nobody mentioning it. However, if anyone do directs me to such thread I will delete this redundant.

In the pass weeks I found a mention of this project on youtube and mentions it being a life changer that would make TS3 optimized for 64-bit systems. What are thoughts about this? Is it something worth being excited about?

Given that Sims3 is still an actively marketed product you would need explicit permission from EA for a project to create a 64bit version, which would effectively be "reverse engineering" the core files of the game ...expressly forbidden in the TOS. And EA is not known for being cooperative.

And if whoever is doing this has a way of accomplishing their goal without editing any default files, it will take an army of beta testers quite a while to ascertain compatibility with the various permutations of the game (for example there are many mods I cannot use, even simple houses, because they require most, if not all, the EPs ...some of those EPs add gameplay in which I'm not interested).

You will need a legit copy of TS3 to run this. I don't understand it, but it's not running the actual "reverse-engineered" part but a hand-off. I don't really understand the technicalities, this video explains how it works.

https://youtu.be/NSuiSZVTVh0?t=19

I've been casually following them on Youtube, they post long play-throughs testing the latest incarnation. It's progressing, but I don't think they are near a release date. They've worked on running different worlds, World Adventures, Late Night, Pets, Seasons so far.

An explanation on their website. They call it an engine mod.

https://opents3.com/about/

It's called OpenTS3 but isn't open source, that's pretty much where the conversation can begin and end until that fact changes.

Closed source vibe-coded garbage is not worth anyone's time.

Support efforts like OpenTS2 instead, and shelf the idea that 64bit is needed to magically solve all of TS3's underlying issues in the first place.

I had no idea there was an OpenTS2 project. Thanks for sharing that.

Regarding OpenTS3, honestly, I've been keeping up with this project, alongside the Sims2Remastered mod project. I'm really curious to see how both those mods will turn out, and am especially curious about what an open-world Sims 2 with body-sliders could look like, because the whole thing just sounds really interesting.

I just went over to OpenTS3's website and they state in the FAQ that the engine mod will become open source at some point in the future: https://opents3.com/faq/



So, I guess we'll just have to wait and see.

The creator also shared a video showing the progress on this project: https://youtu.be/09oXiW2UV_8?si=A1wDSUaJ1jXDek7J

He also mentioned in the video that there's a whole team working on it.

Personally, I found the FAQ lacking which is why I specified until it changes.

There is no suggestion that the source will be released before the first public version - which is a security concern. Users flocking to install unvetted vibe-code will be chaos.
The creator is not pre-established in the community and we have no names to the supposed team of developers. No basis of trust or quality.

I also find it disingenuous to already use the naming scheme of the Open and Libre software movements before committing to it.
As it is, it's someone's personal project. Good for them - but dubious reverse-engineered software is a dime a dozen right now and we can do better.