No, meeting the minimum system requirements for an operating system is important for gaming because it ensures a game will work; just meeting these may affect the quality of graphics, resolution, frame rate, and smoothness of gameplay.
Nevertheless, there are other ways to play Fortnite, either using Xbox cloud gaming or GeForce now.
Please see the following links for more info:
- Fortnite on Xbox cloud gaming: https://www.xbox.com/en-US/play/games/fortnite/BT5P2X999VH2
- Fortnite on GeForce now: https://www.fortnite.com/mobile/geforce-now?lang=en-US