I discovered this game while searching for really happy mouse footage for an idea i got, i watched gameplay on youtube and it really managed to unnerve me and make me uneasy (which is probably a good thing for an horror game ?) With the whole game being regular mario except with the specific things that made happy mouse scary such as the gray color palette, the music and the title screen with it's "specific waiting easter egg"
Shortly after that i got to sleep but couldn't sleep because i kept thinking about the game, i decided to scroll my phone to relax myself and saw that someone was trying to connect to my Microsoft account which i probably would've been sleeping on and maybe even get my account stolen if it wasn't for really happy mario haunting my dreams so thank you for that too i guess ?
Tldr: This game saved my microsoft account and gave me a good fright, 10/10