how i do get games on facebook?

[aryan]

Get games on facebook? Do you mean you want to put your own game on facebook?? For that you'll have to create a developers account on facebook and a game to put there. Once you have the game you can choose "App of facebook" from the settings tab and provide the game's URL (the site's url where you have hosted your game) in the canvas URL option. You game will be on facebook then.
If you are looking to play games on facebook I can recommend you some good one:

https://apps.facebook.com/save_the_plane...rce=fbpage
https://apps.facebook.com/thecopter/?fb_...s_bookmark
https://apps.facebook.com/flappy-chick/?...s_bookmark

You'll find more in the app center.