There are thousands of games you can play on Facebook which includes puzzle games, action games, adventure games, racing games and so on. But you can find easily that most of the games are cute and may be more suitable for kids, even the mafias in them are lovely.

So Facebook games are children's patents? Of course not. Here I will recommend some horror games for you. Don't ask me where the horror is. Just feel free to experience all.

Braaains is a Facebook game developed by Broken Bulb Studios. Be the head of a zombie army and exhume them at the graveyard, equip them with weapons, clothes and enhancers for them to fight against other zombie players.

Keep a horde of zombies as pets, take the brains as food, make the blood as drink and live in the cemetery... this must be an exciting life for you. Don't forget to exploit all the mad science for your pets.