Just started playing Planetside 2, I didn't know it existed till this last weekend, but in that short amount of time has become my favorite game ever.
https://www.planetside2.com/
videos
base assault
https://www.youtube.com/embed/mfwd3U709dc?feature=oembed
For those that aren't familiar with the first one it's a massively multiplayer FPS.
highlights for those interested.
-Leveling system
-Individual vehicle proficiency (unlock bigger and badder tanks/planes)
-ability to spawn your own vehicle and lock them or share them for use among your faction.
-Gear upgrading and unlocking system (new weapons and addons to existing weapons)
-"perk" based skills acquired by experience with a certain proficiency (example; faster repair speed after repairing a lot of vehicles)
-built in team/platoon/squad voice chat
-24/7 "living world" the gameplay evolves without you being there. (gain/lose teritories)
-3 separate factions with pro/con
-class based fps each with their own individualized "skill tree"
-truly massive multiplayer (100's of players in battle at once) (2000 max per map?)
-insanely large scale maps (think GTA big or bigger, each with superficial "territories" and bases/camps/facilities to capture)
-king of the hill type of battles with objectives in each fort to take over
-auto squad (match making) and "instant action" to jump right into the fight.
....lots lots lots more
the only ... and I mean the ONLY downside that makes this anything less than a perfect 100/100 is that it eats every single computer ever made for lunch. The game was designed to make computers cry. My buddy who has a 2x GTX 690's in SLI on a overclocked watercooled i7 @ 5Ghz still sees spikes in FPS (40fps) @ 1920x1200 ultra settings during insanely large scale battles. 50-100+ man base sieges. (60-80 during small skirmishes and general gameplay) As a reference he gets like 200+fps in most other modern games with similar settings. In concept it's flawlessly perfect game. In execution, it has small bugs here and there, but are being actively squished every patch. I still give it 100/100 even considering these minor things, the stuff it gets right more than makes up for the tiny imperfections.
tldr; put battlefield, call of duty, world of warcraft, warhammer, and halo series's all together and but them in a blender served at the temperature of the sun.... or your CPU... whichever is hotter after playing for 30 seconds.