That seems to have been a bluff. It seems that the entire tournement was a test to see if a mortal for one of the underpreforming races would be selfless after literally fighting for their lives.

they flat ou say that he would have destroyed all the remaining universes if the winner had used the Super Dragon Balls selfishly.

Without Goku to put the idea of tournaments in Zeno's head, it's probable that nothing would happen.
SD Gundam Force takes place partially in a world after a Bad End for Mobile Fighter G Gundam.

For Context, SD Gundam takes place in a world where, instead of giant robots piloted by humans by various means, Gundams are cute and roughly the size of human children with a Chibi aesthetic... While still being fully ****ional and Gundams. They all have their own independent conscious and are fully sapiant.

The setting is an conflux of three parallel dimensions: The main city where Gundamns are built like any other machine, Lacraoia, a parallel dimension with a medieval fantasy aesthetic where mechanical life forms up to and including magic-using Knight Gundams are created from magical eggs, and Ark where there are no humans or sapient organic life of any kind, only ki using Musha Gundams who are born, not made, and seem to have some kind of reincarnation system or regenerative immortality—it's noted that even if one runs out f energy entirely, that their soul is only sleeping and they'll be back eventually.

Aesthetically, the Gundams of the main dimension resembles the orignal continuity, the Knight Gundams of Lacraoia resemble Gundam Wing mobile suits, while the Musha Gundams resemble those from G Gundam.

G Gundam, meanwhile, takes place in a timeline with a heavy focus on martial arts, possesses Ki use and similar supernatural elements, and most importantly,t here's the overlaying threat.

The Devil Gundam: Originally known as Ultimate Gundam, Devil Gundam was the crowning achievement of Dr. Kashou and his son Kyoji. Combining biological matter with nanotechnology, the Ultimate Gundamwas composed of self-adapting, self-replicating, self-repairing "cells," and could thus maintain, repair, and upgrade itself without any outside output. It could even give birth to other mobile suits which could intern grown and evolve over time. Dr. Kashou was hoping that he would be able to replicate these traits into humans, granting them the ability to continue to heal and adapt, and even use the Ultimate Gundam to repair the earth itself after it was rendered barely habitable by centuries or war and pollution.

Then the military of the Neo-Japan Space Colony attempted to seize the Ultimate Gundam, its leader going rogue and hoping to conquer the known universe using Ultimate undam as a weapon. This failed when Kyoji piloting Ultimate Gundam fled to Earth and crashlanded, leading to a cover-up painting Dr. Kashou and Kyoji as traitors and basically setting up the whole series.

Ultimate Gundam was severely damaged in the crash, and while repairing itself it glitched out and decided that repairing the earth was its sole priority and that it had to kill all humans in order to do so, which led to it not only birthing an army of hostile mobile suits but infecting countless humans and pre-existing mobile suits with its sells creating an army of regenerating robot-zombies, leading to it being Rechristened the Devil Gundam.

...So. Back to Ark. the Musha Gundam, the only sapient life forms in their reality, machines that are born rather than made and don't seem to be able to permanently die. And use Ki.

So... Obviously, this is a timeline where the Devil Gundam wasn't destroyed. It succeeded in wiping out humanity, restored the Earth to a pristine state, its goal achieve it went dormant, and over time the remaining organisms and technology infected with DG cells evolved into the Musha Gundam, who developed Ki use because they live in a world where Ki is possible.