Roleplaying Gametype
The Roleplaying game type is a user created "custom" game in which players are expected to take on the role of a character or leader from the game's scenario or, in other words, role play. Due to the roleplay, sometimes the aim of players may not be to win in the traditional sense of conquering all their enemies. The scenario largely dictates how the game is to be played.
Gameplay
Common roleplay aspects may include:
Scenario
Scenarios are designed by the host to give players a context in which to roleplay. This should include things such as time period, world, scope and roles. These parameters give players the guidelines with which to play the game.
Optional rules for RP (roleplay) games include diplomacy, also known as diplo, public enemy, Old English (or any other language, dialect or accent, just for fun).
Players which break Rules in a Diplomacy Games are often called a "PE", which is short for Public Enemy.
In many Diplomacy Games only the Hosts can (un)declare PEs, but sometimes the Hosts also allows normal Players to (un)declare PEs.
Often all Players which are adjacent to a PE can attack the PE without warning/permission and even have to attack the PE, if they're able too. Somebody who won't attack a PE or even are helping a PE might become a PE itself.
Origin
While the exact creator is not known as after its obscure creation other users quickly copied the rules and made spinoffs, the user "Soviet Russia Buddy" takes the most credit for creating the game. His first game was known as "Reality Warfare, A New Way Of Playing", which was then shortened to "Reality Warfare" which its current name is. This can be disputed by Le Count H who was laying the foundation in scenarios in late September of 2012. These were initially unfair due their emphasis on giving nations overwhelming advantages due to their size. His games became extremely popular the following summer. Another user named "Zecit" coined the term "Public Enemy" in his game "Simulation World", which is used in many Diplomacy games. Out of all hosts commonly making these games, he (presumably male) has the most amount of rules and hosts games at least once a day. However, not all of them are rules and rather more creative and realistic additions, one of which is a rule involving capitals, and some are guidelines that can be used to be more "diplomatic". People who have played with him have said they have played that gametype with him for almost 2 years. When asked where he got his possibly original idea, he said he had been playing a 24FFA with no fog when he noticed that everyone had to have secret alliances as no one was attacking anyone.
Current
Currently, many different players host these games. Most of them are 6FFAs, but Soviet Russia Buddy and others host 24FFAs, or sometimes less for scenario diplomacy games. While many players attribute many different users for its creation, many only use 3-4 of Soviet Russia Buddy's original rules, usually copying them word for word. Alternatively, rules are slacked and public declarations are only required if a player wants to be "trustworthy". Many diplomacy games involve a strong element of roleplay, as players play as if they were a character in whichever world the game is set in. This works especially well with maps of universes from fantasy novels, such as George RR Martin's "Song of Ice and Fire".
Diplomacy mods
The most requested feature from Uservoice, Peace Treaties, has been implemented as a Mod. The Advanced Diplomacy Mod and Diplomacy mod remove the need for players to be "trustworthy", as declarations are not needed anymore, since if you are at peace with someone, you cannot attack each other.
Warning: As of November 2018, there are bugs with the Advanced Diplomacy mod. Use the Diplomacy mod instead
Other
Common settings are "no fog" or "slight fog", so as to know if someone really did blitzkrieg. All cards are often enabled to allow for interesting storyline twists to occur in the game.
Also most Diplomacy-games are Multi-Day Games, so everyone can react easily and unstressed and because Diplomacy-Games often have many Players. But also some are Real-Time with a high Boot-Time.
Most hosts make the game a practice game.
Most hosts also use custom scenarios, if they aren't able to use custom scenarios, they usually choose manual distribution.