Cooperation Requires Incentives
Let me turn the question around: why would you cooperate? Tobold is thankful that our real-life ancestors were not as blood-thirsty as the average DayZ player, but I am not even sure whether or not that is true. Recorded history is filled with the conquest of the weaker, and who knows what happened in the darkness of the forest millennia before that?
The problem in gaming, as is often the case, comes down to incentives. Specifically, if there are no extrinsic bonuses for assisting someone in any game, I generally only do so if I happen to be in the mood and it’s easy. For example, I have no problem playing Medic classes in PlanetSide 2 or Battlefield 4 because reviving teammates A) gives me as much XP as a normal kill, and B) the revived character is likely to get me closer to the goal of winning the match/flag/etc (i.e. more XP). Guild Wars 2 also did a pretty good job in incentivising reviving other players along similar lines. Obviously 5-man dungeons and such offer similar carrots.
In the absence of the extrinsic carrot though, a game designer cedes control to the player’s own nebulous intrinsic motivations to govern behavior. Unless you are a particularly extroverted individual looking to make more internet friends, there is really no reason you would ever cooperate without the carrot. If it’s a free-for-all scenario, not killing another player on sight is a huge risk. And even if you are willing to take that gamble and it succeeds, the “reward” is generally limited to what you can accomplish within that play session… unless you go out of your way to befriend them.
What if you don’t want more friends?
For a PvE survival MMO to work, I think constructing the proper incentives for cooperation would be Priority #1, and they would need to be extrinsic incentives. I am not a huge fan of the permadeath ideas Rohan was tossing around, but imagine if permadeath were a possibility, and killing other players (without cause) increased that chance? Let’s say the odds of permadeath were 10% baseline and increased by 25% for each player you killed. Meanwhile, if you healed, revived, traded/interacted with, or perhaps simply were in X radius around another player on your friends list, the baseline permadeath chance dropped to 0%. The “stain” of unjust PvP would not diminish – unless as a result of some penance or whatever – and yet it would give both groups the relevant incentive to do stuff with others.
I do not necessarily think it is wrong for game designers to rely on players to want to make friends to enjoy their game properly, but that ship has long sailed for me. I got my ex-WoW buddies, some IRL friends, and this blog if I want to talk shop with someone; I’m not entirely in the mood for the arduous vetting process and necessary synchronized timing necessary to make new friends. Needing to join a guild or Outfit or whatever to get the “full experience” simply means I won’t ever be getting the full experience in your game.
And if your game offers nothing else, then I won’t be playing it.