Konami released update 1.301.000 for Metal Gear Solid: Peace Walker (Master Collection Version) on September 18, 2026. The technical patch focuses on refining the matchmaking logic for the game’s cooperative and competitive modes, specifically adjusting the “SEARCH HOST” functionality.
The update is identified by different version numbers depending on the platform:
- PlayStation 5: Ver. 1.3.1
- PC (Steam): Ver. 1.3.2
Key Changes and Matchmaking Adjustments
The primary focus of this update is the technical refinement of how players find active sessions. Unlike other titles in the Master Collection that are largely single-player experiences, Peace Walker relies heavily on its “CO-OPS” and “VERSUS OPS” features. The update implements the following:
- Search Logic Overhaul: The internal method used when selecting “SEARCH HOST” has been changed to improve the efficiency of identifying available sessions.
- Stability Improvements: General stability fixes have been applied to address minor issues and performance across all platforms.
According to the official Steam Community notes, these adjustments are intended to streamline the process of joining other players’ games. This is particularly relevant for the “CO-OPS” mode, which supports up to four players for boss battles and specific mission types.
Analysis of Gameplay Impact
The adjustment to the “SEARCH HOST” logic addresses a core component of the Peace Walker experience. Because the game was originally designed for the PSP with local ad-hoc play in mind, the Master Collection version requires robust network logic to handle modern online matchmaking. Factually, the update changes the method used when selecting “SEARCH HOST” to refine how the game identifies available hosts. Analysis suggests players should experience fewer failed searches when attempting to join missions or competitive matches.
This update is specific to the Master Collection version of the game. It does not affect the legacy PSP version or the HD Edition previously released for the PlayStation 3 and Xbox 360.
