This is a secret easter egg and death screen ONLY in the HD Renovation version of Spooky's Jump Scare Mansion. After acquiring the axe, the player can swing it on the jar containing the brain. The first swing will crack the glass, while the second swing will unleash a deadly sight. The brain will escape free from the jar and kill the player seconds later on first contact. There is no chance of escaping death once the brain is set free, as your ability to run will be disabled and your walking will be slowed down dramatically.
The only thing I wish is that there was more to the death screen, rather than just a sudden "game over" screen. But hey, at least I got an achievement, and it's still a cool easter egg nonetheless!
![](https://i.ytimg.com/vi/vFlybD_klOQ/maxresdefault.jpg)