Played some Blacklight: Retribution on Steam, it's pretty good. It's a free competitive FPS game, has some interesting things in it.
For a free game I'd say everyone should try it out, but I'm not into FPS right now so I won't be playing it on any steady basis.
“Anna, my strong, terrifying Anna.” -Cas
"You lack the requisite spine and testicular fortitude to study under me" -Elodin