Planetside
It is rare indeed that you find what you might call a bespoke game - a game so precisely matching your wants in its design, it may as well have been designed by you. There are many people on the board that talk about BF2, Tribes, J-Ops and other large scale FPSs - but I tell you, all of these games pale in scale to the epic majesty that was Planetside in its heyday.
Three sides, the Vanu, the NC and the Terrans fight over a dozen or so continents on one planet - and on each continent are large base structures, with turrets, medical and armoury facilities and defensive walls. These bases are linked together in the same manner as Unreal Tournament 2004's Onslaught mode, so you have to capture bases that are connected together by a web of lines on the map - usually meaning that the next base you have to go for is one of two or three.
Each continent is huge, perhaps taking more than an hour of real time to run across - several minutes even in the fastest vehicle. There are deserts, swamps, temperate climates, and frozen wastelands, with bases set in subtle natural features such as basins or on hilltops to increase defendability.
Each base takes a minimum of 30 minutes to capture, though in reality, it takes much longer. The net result of all of this is a 3-front war, that is fought 24 hours a day, 7 days a week, progressing back and forth over each of the huge continents, ebbing and flowing like the tides - a dynamic conflict, changing every moment but always the same epic warfare.
Each of these fronts will have a pitched battle where two sides meet - usually involving upwards of a thousand players.
I remember one night I was in a squad - I was actually the squad leader, a role I almost always took as I fit into it well. We were flying towards an enemy base after we'd just secured one, so the enemies had been pushed back to a base across the mountains, many kilometres away from our prior battle. One of the players had taken a fast aircraft, and before he was shot down, he had observed most of the players were spawning at a specific base. The Command Rank players told us they would send a covert team to the less populous base to try and surprise them, and we would turn our attention to the busy one.
I told my squad we would drop at the base's rear emergency door, amongst some trees. Upon doing that, we were to immediately run into the cubby hole in the base wall, and have our hacker try to force open the door from the outside. I told my squad specifically not to fire unless fired upon, and got an RGR from everyone.
We dropped from a height of around 500m, and landed in an area around 10x10m as we had practiced previously. We all immediately ran into cover whilst the hacker did his work. As soon as he finished, before we went through the door, there was a pause. We could hear the enemies in the base courtyard, preparing their vehicles for a counter-assault (everything was a big logistical operation in Planetside, considering the distances involved in the game). I then said to my squad,
"Do you hear that?", to which they replied,
"What?" - and I said
"That's the sound of about 500 people that have no idea we're less than 50 metres away from them."
On that we advanced into the base; I told my squad that we were not to fire unless fired upon again. We actually had an enemy player run right past us without noticing (the idea of a dozen NC inside a populated terran base was somewhat incredulous after all).
We proceeded to the base's control console, that if hacked, would start the base capture timer - and set off the alarms. Two-thirds of the way, an enemy player saw us and we blew him away - at which point, I reminded the team that when he spawned in 90 seconds, the secret would be up and a world of pain would come storming down from the surface. We abandoned all idea of stealth and cut a swathe through the basement level, breaching each room with grenades then piling in. We then got to the CC, hacked it, and took up defensive positions.
At this point, the lead command rank player (who was in my outfit/guild) sent me a PM, basically consisting of the words "way", "no" and "fucking", "bastard", "you" and "magnificent" - though not in that order.
We didn't manage the whole 30 mins before being relieved (logistics again), which I would regret - except that we held out for around 15 minutes. We held against the entire terran empire - 12 of us - for 15 minutes, using team tactics and creating choke points out of the doors. Eventually they got in gear and used grenade launchers to lob explosives around corners, and we got flushed out - but it gave time for the 2nd wave of NC to arrive and very swiftly crush the terrans that were still concentrating on the enemies inside their base rather than outside.
Best evening of gaming ever. Like the best storyline sections of any FPS you have ever played - but we did it as players, against players, with a storyline consisting of strategy, suspense, humour, sacrifice, honour and mettle, elevated above other FPS storylines because we forged it through teamwork.
Please God, SOE, make a fucking sequel.