Good Browser / Facebook / online FPS / fps scifi game

On old days i played NOVA ELITE on facebook, my very first with extremme quality sci fi fps shooter, But it closed his doors on setember and so did the other very good quality facebook games like restaurant city <3.
So, anyone here knows a quality fps shooter , sci fi shooter (preferencialy like nova) online or facebook , whatever ?

I actually moved on to gfames like ava, district 187, arctic combat, but im sick tired and i wanna fell that emotion again !

Maybe Ghost Recon Online.
Sci fi game.
You can compare it with Killzone

Ghost Recon Online