Yes, Xenia itself is legal. The legality depends on how you obtain the game files. Only games you rip from your own discs are clearly legal to play.
Unlike earlier console generations where games were simple cartridge dumps or standard ISOs, Xbox 360 archival involves distinct file structures. To build a high-quality collection, you must understand the difference between the primary formats available. 1. ISO (Disc Images) xbox 360 roms archive high quality
Reddit is a goldmine for curated lists. The famous maintains a live-updated list of high-quality archives. Yes, Xenia itself is legal
Even with a high‑quality ROM, you may need to tweak your emulator to get the best experience. xbox 360 roms archive high quality