Its Not A World For Alyssa Version 1.6 -

It seems you're referring to a specific fan game, mod, or ROM hack titled — likely based on a well-known RPG (e.g., Yume Nikki , Omori , EarthBound , or a Pokémon ROM hack, given the naming style). However, as of my current knowledge cutoff, this exact title does not match a widely documented mainstream game.