VALORANT Map Rating explained: Patch 13.08 and the new map pool

1.Introduction

VALORANT's Patch 13.08 introduces Map Rating, a way to review how you are doing on individual maps. The notes, published on 13 October 2026, also cover Corrode changes and a competitive map rotation.

2.What Map Rating measures

Map Rating combines four signals: overall win rate, attacker win rate, defender win rate and Performance Score. Riot describes a scale from 0 to 500 alongside a letter grade from C to S.1 Recent matches matter more than older ones.

Use the breakdown to ask a narrower question than whether a map is good or bad for you. If attacking is your weak side, review entries and trades. If defending is weaker, review how you hold space and rotate. These are suggested review habits, not a published formula for gaining rating.

3.Where it appears and who can see it

The feature applies to Competitive and Premier. Riot lists Agent Select, End of Game and Career as places to see your rating and related map information.1 Other players cannot see your Map Rating.

Everyone starts fresh when the feature launches: older match history does not count. A small early sample should therefore be treated as a starting point for review. One win or loss does not describe your long-term understanding of a map.

4.Which maps entered and left the pool

Bind and Corrode replace Ascent and Split in Competitive and Deathmatch.

5.What changed on Corrode

A/B defender routes are shorter. Mid’s metal wall moves 1 metre; boxes shift toward B with a jump-up, and a taller wall blocks elevated peeks. A’s plant boundary also changes to weaken A Link post-plants. The metal cover reduces wall-spam and conceals the A Link approach from Top Mid.

[Image: corrode-mid]

6.The Performance Score timeline matters

Although the adjustments appear in the 13.08 notes, Riot says they went live during 13.06.1 Damage, adjusted kills and adjusted deaths received more influence, including first kills and first deaths, with a separate adjustment for Chamber's utility.

At launch, Performance Score and ACS selected the same Match MVP roughly 70% of the time, according to Riot.

Read those changes as context for what Performance Score is valuing. They do not justify presenting every number as a fresh 13.08 balance change or treating kills as the only contribution worth reviewing.

7.A useful plan for your next session

• Refresh Bind and Corrode before spending time on maps outside the current rotation.
• Compare attacking and defending trends instead of judging yourself from the overall number alone.
• Review several matches, including rounds you won, before changing your approach.

Hush's reveal belongs to a separate story. These map and rating changes affect the current Act VI experience regardless of when the new Duelist becomes playable.

8.Agent, client and enforcement updates

Killjoy’s Alarmbot gains destruction feedback from moving doors. Queue/Mode Select is redesigned; Career gains feature navigation.

Riot’s Act 5 penalty totals: cheaters 171,000+; botters 54,000+; rank manipulation 76,000+; comms abuse 74,000+; repeated AFK/gameplay abuse 288,000+; streamsniping/instalocking tools 14,000+. The reporting window was 18 August–1 October; totals cover suspensions of at least three days.

9.Fixes and remaining issues

Fixes address the Masterful threshold, Fog of War footsteps/bodyfall positioning, gun-bounce audio and Warden scope alignment. Team MVP display remains unreliable; Range in Queue stays disabled while Riot tests a fix.