“The game” was referring to Unturned.
Unturned II (4.0 will feel more optimized for people who are currently playing Unturned (3.0) with the proper hardware.
It’s too early for a reliable assumption to be made about the specifics, and that also depends on the rest of that person’s hardware.
I would assume the game would struggle to launch. 32-bit systems cannot utilize all of the RAM/memory your machine has, and due to Unturned II being a “bigger game,” it’s likely that the limitations of 32-bit may make running the game difficult, similar to how in Unturned (3.0) 32-bit has a hard time with Large-size maps.
Depending on the requirements of Unturned II (4.0), it could potentially give you higher FPS, but that won’t matter if you can’t actually enter any of the map.
If you’re using a 32-bit system, I’d assume that the rest of your hardware is probably old too, but without knowing the specifics of your hardware it’s hard to know for sure. It’s too soon in development for a “recommended specs” or “minimum specs” anyways.
However, 32-bit systems are largely obsolete and deprecated by now. If you don’t upgrade your hardware and operating system for Unturned II (4.0), you’ll have to do it eventually if you want to keep up with modern technology.
EDIT: This is quite off-topic now though. If you have any other questions, maybe send me a private message instead, or make a new thread?