The legitimate way to access the Mario Multiverse (MMV) closed beta is through its official community channels:
Test and play levels locally or online with friends in real-time. mario multiverse closed beta download
Because the game files require a live server connection and a validated login, simply copying the game folder from a friend's computer will not work. The game will block access at the title screen if your account is not authorized. 5. How to Stay Safe and Avoid Scams The legitimate way to access the Mario Multiverse
Don’t worry. We will open next Friday at 12 PM ET. Sign up on the homepage to join the waitlist. Sign up on the homepage to join the waitlist
Mario Multiverse is a fan game designed to be the ultimate 2D Mario maker engine. Developed by NeoSonic Productions and a dedicated team of fan developers, it features custom physics, hundreds of new assets, multiplayer capabilities, and themes spanning multiple eras of Mario history. Unlike official games, it allows creators to implement complex scripting, custom enemies, and unique mechanics that are otherwise impossible to build on a Nintendo console. The Reality of the Closed Beta Download