Call of Duty Modern Warfare 4 Open Beta Start Times and Weekend Guide

The Call of Duty: Modern Warfare 4 Open Beta Weekend kicks off on August 28 at 10:00 AM PT, offering players worldwide a chance to test multiplayer modes, new maps, and campaign content ahead of the full game launch on October 23, according to official publisher announcements. Players on all major gaming platforms can jump into the beta test without needing a pre-order, as detailed by Activision. The event spans multiple hardware ecosystems including Xbox Series X|S, PlayStation 5, PC Battle.net, Xbox on PC, PC Steam, and Nintendo Switch 2. Platform Access and Schedule Details

The second open beta weekend opens its servers globally on August 28 at 10:00 AM PT, according to publisher scheduling notes. Participants do not need to secure a pre-order to gain entry to this multi-platform test period. According to platform deployment overviews, the beta runs for a limited time to gather stress tests and balance data before the final software release hits retail channels. Multiplayer Modes and Campaign Content

The testing period includes a mix of traditional 6v6 competitive maps alongside larger cooperative war zones. According to beta deployment notes, participants can access core playlists alongside Ground War: Combat Outpost and Kill Block. Beyond traditional multiplayer matches, the test build introduces specific single-player and battle royale slices to the public. According to publisher breakdowns, users can play the campaign mission titled “Entrenched” and try out the new Zodiac Resurgence map configured for Call of Duty: Warzone. In-Game Rewards and Progression

Gamers participating in the open test can unlock exclusive items that carry over into the full software release. According to official guidelines, rewards earned during the beta become immediately available for use within the test environment and will remain unlocked in Modern Warfare 4 when the title launches on October 23. According to publisher statements, this feedback loop aims to ensure a stable day-one experience for the entire player base.