MRP stands for Mature Role-Play. Role-Play in this
definition refers to the typing
RP done in video games, chatrooms and forums.
MRP is role-playing that may involve violence, strong language, drama and quite often
sex scenes, though unlike ERP, the scenes are a sub-product of the RP, not the whole RP.
MRP
will usually be a long term role-play and anything that happens in the RP
will effect the characters for the rest of the storyline. MRP is suggested only to those who can understand adult situations and consequences as well as those who do not mind having their character die or change completely if the RP calls for it.
MRP is basically RP that is rated R.
The term is often confused with ERP by people who think maturity means
sex, but it is very different.