To the Boundless Void, a galaxy was an entirely new creation. So far, there was only a single Earth-Moon System, with Brurell as its primary body and an artificial moon as its satellite. Even its most important component was still a natural planet: Brurell.
Thus, creating a galaxy should qualify as a Great Deed in terms of scale.
According to Isaac's current conjectures about Great Creations, they fell into two main categories. The first involved changing, completing, or even creating rules. Tangible constructs belonged to this category too, whether they were simple systems of power like those of goblins and Goblin Slayer, or powerful supernatural systems like that of Arcane Masters.
The fundamental rules of a supernatural path manifested themselves as tangible power. Compared to other, more abstract rules, constructing a new, concrete supernatural path was clearly much easier.
Of course, "easier" was only relative. After all these years, there were only two cases that could be called successes: knights and Arcane Masters.
For knights, only their initial origins in wizards' bloodline modifications were documented in detail. Whether wizards had also played a part in their eventual rise to their current heights remained unknown.
Thus, the only genuinely successful case was that of Arcane Masters.
That alone showed just how difficult it was.
Most Great Creations in this category therefore involved creating or completing rules. However, such Great Creations were too abstract. Not only were their true forms difficult to detect, they also caused little commotion. There were no examples to copy; it all came down to talent.
Isaac called the other category Wonders: things like the Endless Wilderness, the Endless Sea, the Boundless Tower, and the Cottage in the Woods.
The Infinite Starfield Isaac had conceived also belonged to this category. Its chances of success were relatively high, too,