Face of Mankind is a mmofps, but very different from planetside. I played the beta for months and i think it was the best online experience i could dream of.
It was focused on roleplay so it's not only a big fps like planetside, you need to talk and act like your alterego for real to gain importance and get an higher rank.
The game is all in the hands of the player, there's no safe location, no premade quests, no exp, no levels. It could sound strange but it's really interesting, you can became a LED (police) and hunt for lamers and killers to keep order on Earth cities or you can join FDC (space marines) to patrol the free colonies and escort merchants or VIPs.
You can also choose to join factions like BoS or Mercs to play more freely or factions of merchants or megacorps.
It was really interesting to see how well the beta was balanced. In a game when everyone can go anywere with a weapon lamers are a great menace but the police system controlled by players worked very well and all of that improved the cyberpunk atmosphere were no one is truly safe.
Higher rank players had a lot of power too, they had the control of the Senate, where all the factions can do reunions and do alliances and wars, they also had the power to conquer an entire space colony or to make missions for the others.
All that stuff was really well balanced during beta, when the game becamed pay to play without trial periods it loosed a lot of players and became a place for lamers with no roleplay.
I hope it can rebirth soon, as the new version will be called Face of Mankind: Rebirth