Here is a selection of twenty Facebook gaming applications that you can add to your Facebook profile and play with or against your network of friends. The collection includes games from various genres such as classic Nintendo arcade games, puzzle, strategy, action, virtual life, word games, etc.

Facebook Friend Game: The game is simple – a trivia question, five friends to choose from, one correct answer against the timer.

Nintendo NES Games: Allows you to play classic Nintendo NES console games such as Super Mario Bros, Teenage Mutant Ninja Turtles, etc from your web browser and then save the Last played’ list to your profile, respawn by entering cheat codes, save states under your username, save screenshots and share with everyone else, leave comments on gameplay and tips, etc.

Zombies: One of the most popular viral game that increases your Zombie character level by biting friends and converting them into zombies (when they install the application)

Pets: In a pet store, there are various pets each with a different level of Hitpoints, armour, damage and gold. After selecting a pet, you set forth to to battle monsters, gain experience and money, buy and find new items, and try to make your pet the strongest. Your friends can help you get bonus experience by petting, feeding, or poking your pet on your profile page.

Traveler IQ Challenge: In this game, you’re asked to pin point where famous places, cities, and travel destinations are located. It then calculates your Traveler IQ based on how close you were and how quickly you found the spot. You can also invite your friends and test their IQ.

Scrabulous: Play the famous word game Scrabble from Facebook along with you friends.

Pirates v/s Ninjas: Swashbuckling moves versus martial arts action, corsairs cannonballing ninjutsu clans, the life of piracy and shinobi stealth. Recruit your friends and join the Pirates vs. Ninjas adventure! Each time you recruit a friend you get stronger and when they recruit more friends, you benefit.

Fluffy Friends: Adopt pets such as penguin, panda, squirrel, giraffe, monkey, turtle, etc and let them interact with yourself and your friends.

Rock Paper Scissors: This is a Rock Paper Scissors game in which you can challenge anyone in your Facebook network or accept thier challenges.

Chess: Play Chess against any of your Facebook friends online. Move history is updated in a sidebar.

My Aquarium: Create a virtual aquarium with creatures from the seaworld such fishes, sharks or octopus and put it on your profile page for your friends to see. They can also send you items to you.

Capture The Flag: Run around stealing flags from your friends and holding them for a time period to gain points. Like Counter Strike or Unreal.

Retro Arcade: Design your own Retro Arcade game. Play Pacman, Donkey Kong, Tetris, and other arcade games with your friends.

Bogglific: Bogglific is based on the dice game Boggle. The object of the game is to make as many words as possible from the 4 by 4 grid of letters in three minutes. Between two and eight players play against each other in real-time.

Mafia: Become the GodFather. Create your own family of mobsters & henchmen. Rob others of their booty. Fight against the cops and earn reputation. Like Mafia for PC.

Pimps: Create a pimp, build your stable, pimpslap other pimps, earn cash. The pimp with the most cash rules the streets!

Harry Potter Magic Spells: From “Accio” to “Wound Healing Spell”, we have gathered all of the Harry Potter spells for you to use on your friends. Just browse the Library of Spells to find the spell you want, and then select a friend to be the target of your spell.

Crosswords Online: Play multiplayer crosswords and chat with friends online.

Global War - Fallout: Fallout Online is a FREE massively multplayer game. Play with your friends and conquer your enemies! An anarchy movement has caused nations to dissolve, leaving only Generals to protect territories with the world on the brink of armageddon.

Jetpakz: Jetpakz is a fast paced, action packed, arena style game; compete against your friends or the A.I in all out air-warfare. Boost, roll, dodge and blow up your opponents in all out air-warfare.