Can unity games be made into apps for facebook.

Just like the tittle suggests when im done with my multiplayer fps will it be possible to post it on fb? im told flash is possible but i wasn't sure about unity?

Yes you can. http://www.google.com/search?hl=en&client=opera&hs=1ve&rls=en&q=site%3Aunity3d.com+facebook&aq=f&aqi=&aql=&oq=&gs_rfai=

But you can make the game a frame of facebook.com so it still uses your website, but puts it on a facebook page.