"We are trying to get the builds working." And begging for contributors on discord. This isn't a real project, just a reupload of yuzu's source code with some overly optimistic aspirations.
If you have a fireball attack, explosion attack, and laser attack, it's better to just use a particle emitter for each. You can reuse scripts in this case.
You might want to add additional effects, maybe particles being emitted at the source when it first fires or from the beam when it's turned off. This would be a bit more simple if everything's just a particle effect.
You can the free version of Niagara launcher, then use the "At a glance" widget from the Google app, or from the app "Another Widget" to replace the paid Niagara widget.
This is, by far, the most compelling theory I've seen.
Given that those things were so common, I wouldn't be surprised if some of the other uses people have theorized could have happened too.