Skill-Based Matchmaking Rating (2024)

Important Notice: Due to recurring arguments with Community Members about the numbers formerly displayed on this page regarding the Skill Brackets and their surrounding mechanics, ALL numbers and values have been redacted from this page and will not return for the foreseeable future, also due to the general difficulty in keeping them up-to-date and accurate because of the inherently hidden and obscure nature of the MMR system in Dead by Daylight. It is unfortunate that Players will have to arrange themselves with the remaining information, but we cannot provide more in-depth information any longer.

The Skill-Based Matchmaking Rating, often abbreviated as "SBMM" or "MMR", is a hidden scoring system used to match Players together for ranked Trials in Dead by Daylight.

The system has been in use since 8 September 2021 and replaced the previous matchmaking system, which had matched Players based on their Grades.

Overview

The Skill-Based Matchmaking Rating uses a hidden score that is influenced by the Player's performance in ranked Trials.
There is no way for Players to know their specific score.

The Skill-Based Matchmaking Rating is a shared value across all Survivors, but an individual one to each Killer.
This is the reason why Survivors can still switch characters when already matched, but Killers are locked to their selected characters.

Ranked Trial Mechanics

During ranked Trials, the Skill-Based Matchmaking Rating functions as a sort of game within a game.
In essence, each Survivor is in an individual mini-Trial with the Killer and vice versa, in which wins, losses, and draws can occur.

The game effectively tracks each mini-Trial, adds up the individual wins, losses, or draws, and calculates the change towards the Player's MMR score based on that.

Modifiers

Trial Duration

The length of a ranked Trial influences the final amount of points Players gain or lose towards their MMR:

• The longer a Trial, the stronger the effect of the multiplier.

This multiplier is capped at 10 minutes.

Opponent MMR

The strength of the MMR of one's opponents also influences the final amount of points Players gain or lose towards their MMR:

• If the opponent team has a higher MMR, but they lose, their losses towards their MMR are increased and the Player's gains towards their MMR are also increased.
• If the opponent team has a lower MMR, and they lose, their losses towards their MMR are reduced and the Player's gains towards their MMR are also reduced.
• If the opponent team has a higher MMR, and they win, their gains towards their MMR are reduced and the Player's losses towards their MMR are also reduced.
• If the opponent team has a lower MMR, but they win, their gains towards their MMR are increased and the Player's losses towards their MMR are also increased.

Team-based MMR

If Survivors queue up together with friends, playing as a group (Survive with Friends), their final MMR score is influenced by what happened to the other Survivors queueing up with them:

• For each team mate that escapes:
  • Increased gains towards MMR upon escaping.
  • Reduced losses towards MMR upon dying.
• For each team mate that dies:
  • Reduced gains towards MMR upon escaping.
  • Increased losses towards MMR upon dying.

This was implemented to counter situations in which team mates sacrificed themselves for the survival of the others and were punished for their altruism by the Skill-Based Matchmaking Rating.

General Ratings

Survivors

Survivors gain points towards their MMR by escaping from ranked Trials and lose points for dying:

• Dying in the Trial is considered a loss towards MMR.
• Escaping through the Hatch is considered a draw.
• Escaping through the Exit Gate is considered a win towards MMR.

Important: the Skill-Based Matchmaking Rating only considers the escape of a Survivor through the Exit Gate when calculating its final MMR score, and does not care how much that Survivor contributed towards the main objectives during the Trial itself.

Killers

Killers gain points towards their MMR for killing Survivors in ranked Trials and lose points if they manage to escape:

• Killing 0 or 1 Survivor(s) is considered a loss towards MMR.
• Killing 2 Survivors is considered a draw.
• Killing 3 or 4 Survivors is considered a win towards MMR.

Important: the Skill-Based Matchmaking Rating only considers the death of Survivors (or their failure to escape) when calculating its final MMR score, and does not care how that death occurred.

This is contrary to the Emblem system (used to determine a Player's Grade), as that system only considers deaths from being sacrificed or being killed by the Killer's hand as actual kills, and also factors in how many times they were hooked.

Killer MMR-Rubberbanding

Each Killer has their own individual MMR score, which is the reason Players are locked to playing a specific Killer once the matchmaking process starts, prohibiting switching to another Killer.

Despite this, however, there is a rubberbanding-effect by which a Player's best-performing Killers will influence the score of all of their other Killers.
This is to prevent skilled Players from being matched with lower-skilled Survivors when choosing a Killer they do not play often or regularly.

It can be assumed that an experienced Player will perform reasonably well with most other Killers, despite not playing all of them equally often and matching them with inexperienced Survivors would not be fair.

This mechanic also automatically affects any new Killers the Player unlocks through purchasing DLCs.

Change Log

Patch 6.4.0

• Added team-based Ratings for Survivors who group up together.