Ok. The building style may have bee "stolen" to use your words. However, I hope you can agree when I say that the two are very different. In Minecraft, the building is used with blocks, while in Fortnite, the buiding is stairs, pyramids, floors, and walls. Very, very different from the building in Minecraft. As for PubG, both are fundamentally the same game. They are both battle royal, designed to be the last one standing. However, I can not agree that Fortnite "copied." Using your logic, I could compare Minecraft with the legend of zelda: breath of the wild, because both are open world games. You may say "But Minecraft has nothing to do with Breath of the Wild," but I would also argue that Fortnite has nothing to do with PubG. Both are battle royale yes, but Fortnite has elements such as emotes and building that separate it tremendously from PubG. As such, I do not think that the games can be compared, let alone copied.