Ragebait :(
Literally anything? Great news!
If you go to the official website for the game Infinity Nikki, where the pic is taken, and look to the left of what the OP cropped, there is a standalone Windows download. You can just download the game.
The game is F2P so while it’s not some big accomplishment to pirate like you’re implying, it is almost certainly loaded with predatory monetization.
If I’m understanding correctly, it’s for users who want to play Minecraft without paying for it, and who want to use the Prism launcher specifically.
The Minecraft launcher? Wasn’t aware it had a paid version, wow.
If you can’t do big p on real hardware