Awesome

RageEvent

Weakly typed event system for Unity.

Caller

EventManager.Trigger("MyEvent", 1f);

Listener

void Awake () {
	EventManager.Initialize(this);
}

[Listen("MyEvent")]
public void MyEvent(object[] parameters) {
	float f = (float) parameters[0];
	Debug.Log(f);
}

Is this the most performant event system for Unity?

No.

Is this the most robust and safe event system for Unity?

No.

What good is it then?

It's reasonably performant, automatically cleans up null references and doesn't require a lot of code.