Call of Duty: Modern Warfare 4 is about to open its doors to everyone.

Following the first Early Access weekend, the Modern Warfare 4 Open Beta Weekend Two begins on August 28, 2026, at 10:00 a.m. PT and continues through September 1 at 10:00 a.m. PT. Unlike the first weekend, players will not need to preorder the game to participate.

Activision has confirmed that Weekend Two is open to players across supported platforms, including PlayStation 5, Xbox Series X|S, PC and Nintendo Switch 2. The company is also positioning the beta as an unusually expansive preview, featuring multiplayer, new modes, progression, rewards and additional gameplay experiences.

For players searching for Modern Warfare 4 beta dates, how to play the MW4 Open Beta, or whether a Modern Warfare 4 beta code is required, here is everything you need to know.

Modern Warfare 4 Open Beta Dates

The Modern Warfare 4 beta is split across two weekends.

The first is an Early Access period for eligible players who preordered or prepurchased the game. The second is the full Open Beta, which removes the preorder requirement.

Modern Warfare 4 Beta Schedule

Activision's official beta page confirms that Open Beta access is available to all players from August 28 through September 1, while PC Gamer and GameSpot have independently reported the same schedule.

Is the Modern Warfare 4 Open Beta Free?

Yes.

The second beta weekend does not require players to purchase Modern Warfare 4. There is also no preorder requirement for Weekend Two.

This is an important distinction because the first weekend is an Early Access period tied to eligible preorders or prepurchases. Once Weekend Two begins, players can join the Open Beta regardless of preorder status.

However, Activision's terms note that an online multiplayer subscription may be required, depending on the platform and territory. An internet connection is also required to participate.

So while the beta itself is free, players should check their platform's online-service requirements before launch.

Do You Need a Modern Warfare 4 Beta Code?

No, not for Weekend Two.

Players participating in the August 28 Open Beta do not need to find, purchase or redeem a beta code.

Beta codes are primarily relevant to Early Access through certain preorder channels. Activision says digital preorders through participating platform stores are automatically validated for Early Access, while some retail preorder customers receive a code.

For the Open Beta, the process is much simpler: download the beta and join when the servers open.

Modern Warfare 4 Beta Platforms

Weekend Two is particularly broad in terms of platform support.

The Modern Warfare 4 Open Beta is available on:

• PlayStation 5
• Xbox Series X|S
• PC via Steam
• PC via Battle.net
• PC via Xbox/Microsoft Store
• Nintendo Switch 2

Nintendo Switch 2 is a particularly notable addition. Activision confirms that Switch 2 players can participate in Weekend Two beginning August 28, and no preorder is required.

That makes the second weekend the first opportunity for Switch 2 owners to experience Modern Warfare 4 through the public beta.

When Can You Preload the Modern Warfare 4 Open Beta?

Players do not have to wait until August 28 to start downloading the Open Beta.

Activision says Open Beta preloading begins August 26 at 9:00 a.m. PT on all platforms.

Preloading is especially useful for PC players, who can download the game ahead of time instead of waiting for the beta to go live.

If you participated in Weekend One, Activision's beta information also provides a streamlined path into Weekend Two, with the beta client receiving updates as additional content becomes available.

Why Modern Warfare 4's Beta Is Getting So Much Attention

Modern Warfare 4's beta is notable because it goes beyond the usual limited multiplayer test.

Activision's official materials highlight a broad lineup of multiplayer maps and modes, up to 19 weapons, new Operators, progression, Perks, Field Upgrades and Killstreaks. The beta also moves from smaller 3v3 encounters to significantly larger battles featuring tanks and other vehicles. Modern Warfare 4 is offering an exceptionally broad content scope for a Call of Duty beta.

Multiplayer Takes Center Stage

At its core, Modern Warfare 4 remains a Call of Duty multiplayer experience.

The beta includes traditional 6v6 multiplayer, along with newer and larger-scale experiences. Activision has highlighted modes including Search & Destroy and the new Kill Block, while players can also experiment with different weapons, equipment, Operators and loadouts.

The beta is designed to give players an early look at Modern Warfare 4's movement and ballistics while also providing developers with feedback before launch.

That makes the beta useful for more than simply building hype. It gives players a chance to test weapons, learn maps and determine whether the new gameplay systems actually deliver the experience Activision is promising.

What Is Kill Block?

One of the most heavily promoted new multiplayer experiences is Kill Block.

The mode made its public debut at Fanatics Fest and is built around an adaptive military-training environment. Activision describes it as a fast-paced experience that encourages players to rethink their tactics as the battlefield changes.

Kill Block is therefore one of the modes worth watching during Weekend Two, particularly for players who want something different from traditional Team Deathmatch or Domination.

Ground War Expands the Battlefield

The Open Beta also expands beyond conventional 6v6 multiplayer with Ground War.

This brings larger-scale combat into the beta, including heavier battlefield action and vehicles. Activision has described the beta as covering everything from small 3v3 engagements to massive tactical battles featuring tanks.

For longtime Call of Duty players who prefer larger maps and more chaotic battles, Ground War could become one of the biggest reasons to return for Weekend Two.

The Beta Also Includes Campaign Content

Another unusual feature is the inclusion of Entrenched, a playable campaign mission.

This gives beta participants an early glimpse at Modern Warfare 4's single-player experience alongside the multiplayer content. Activision's current Open Beta information specifically highlights the opportunity to explore the Campaign as part of the beta package.

For players who normally skip multiplayer betas, the campaign preview gives another reason to download the client.

Warzone Resurgence Is Part of the Experience

The Open Beta also expands into Call of Duty: Warzone Resurgence.

Activision's latest Open Beta information specifically highlights Warzone Resurgence alongside Campaign, Multiplayer, Kill Block and Ground War.

This makes Weekend Two particularly significant because players are not simply testing the traditional Modern Warfare multiplayer component. They are getting a broader look at how Modern Warfare 4 fits into the wider Call of Duty ecosystem.

Modern Warfare 4 Beta Rewards and Progression

Progression is another major part of the beta.

Players can level up while testing the game and unlock rewards along the way. Activision has previously highlighted a range of beta rewards and additional incentives, including Twitch Drops and other promotional rewards.

The progression system also gives players an incentive to spend more time experimenting with weapons, modes and different playstyles rather than simply playing a handful of matches.

For competitive players, the beta is also an opportunity to begin learning the game's weapon behavior and movement systems before the full launch.

Modern Warfare 4 Beta PC Requirements

PC players should also prepare their systems before the Open Beta begins.

Activision has published dedicated information covering PC specifications and preloading, giving players an opportunity to check whether their systems meet the requirements before downloading the beta.

Players should check the official Call of Duty PC information before launch rather than relying on third-party system-requirement lists, particularly because beta requirements can change between test builds and the final release.

How to Join the Modern Warfare 4 Open Beta

Getting into Weekend Two should be straightforward.

Step 1: Download the Beta

Starting August 26 at 9:00 a.m. PT, players can preload the Open Beta on supported platforms.

Step 2: Launch the Beta

Once August 28 arrives, launch the beta after 10:00 a.m. PT.

Step 3: Sign In

Players may need to sign into their Activision account and meet the applicable platform requirements.

Step 4: Start Playing

No preorder or beta code is necessary for Open Beta Weekend Two.

Players can then explore the available multiplayer modes, Campaign content, Ground War and other beta experiences.

Modern Warfare 4 Release Date

The Open Beta is only a preview of the finished game.

Call of Duty: Modern Warfare 4 is scheduled to launch on October 23, 2026. Activision says the beta is intended to help gather player feedback and ensure the best possible Day One experience.

That gives Infinity Ward and its partners several weeks between the end of the Open Beta and launch to analyze feedback and make potential adjustments.

Call of Duty: Modern Warfare 4 — Official Site

Modern Warfare 4 Open Beta vs. Early Access

If you are confused about the two beta weekends, the difference is simple.

Early Access Weekend — August 21–25

• Requires eligible preorder/prepurchase access
• Starts August 21
• Available on PS5, Xbox Series X|S and PC
• Intended as the first major test period

Open Beta Weekend — August 28–September 1

• No preorder required
• No beta code required
• Open to all players
• Adds Nintendo Switch 2
• Includes expanded beta content

The official Call of Duty beta schedule confirms the distinction between the two weekends.

Is the Modern Warfare 4 Open Beta Worth Playing?

For most Call of Duty fans, yes.

The biggest reason is simple: players do not have to buy the full game to find out what Modern Warfare 4 feels like.

Weekend Two gives players an opportunity to evaluate the multiplayer systems, new modes, weapons, movement and overall direction before the October launch. The inclusion of Campaign content, Ground War and Warzone Resurgence makes the test considerably broader than a standard multiplayer-only beta.

It is also an important opportunity for players to provide feedback.

Activision explicitly describes the beta as a way for the community to help shape the Day One experience.

Final Verdict

The Modern Warfare 4 Open Beta 2026 is shaping up to be one of the most substantial Call of Duty beta events in recent memory.

The key date is August 28, when Weekend Two opens the doors to everyone. From that point through September 1, players on PS5, Xbox Series X|S, PC and Nintendo Switch 2 can experience Modern Warfare 4 without a preorder or beta code.

With traditional multiplayer, Kill Block, Ground War, Campaign content, Warzone Resurgence, progression and beta rewards, there is considerably more to test than simply a handful of standard multiplayer maps.

Whether it ultimately deserves the title of the biggest Call of Duty beta ever will depend on how "biggest" is measured. But based on the breadth of content Activision has confirmed, Modern Warfare 4 certainly has a strong case for being one of the franchise's most ambitious beta tests.

Modern Warfare 4 Open Beta Weekend Two starts August 28, 2026, at 10:00 a.m. PT and ends September 1 at 10:00 a.m. PT. No preorder is required.

Frequently Asked Questions

When does the Modern Warfare 4 Open Beta start?

The Open Beta begins August 28, 2026, at 10:00 a.m. PT.

When does the Modern Warfare 4 Open Beta end?

The Open Beta ends September 1, 2026, at 10:00 a.m. PT.

Is the Modern Warfare 4 Open Beta free?

Yes. Weekend Two is open to all players without requiring a purchase or preorder, although an online multiplayer subscription may be required depending on the platform.

Do I need a Modern Warfare 4 beta code?

No. A beta code is not required to participate in Open Beta Weekend Two.

Can Nintendo Switch 2 players join the beta?

Yes. Nintendo Switch 2 players can join the Open Beta beginning August 28, and Activision says no preorder is required.

When can I preload the MW4 Open Beta?

Open Beta preloading begins August 26 at 9:00 a.m. PT on all platforms.

When does Modern Warfare 4 release?

The full game is scheduled to launch October 23, 2026.

Final Thoughts

The Call of Duty: Modern Warfare 4 Open Beta gives players a valuable opportunity to experience the game before its full release. With Weekend Two opening to everyone from August 28 through September 1, 2026, players can explore the latest multiplayer content, test weapons and movement, and get a better idea of what Modern Warfare 4 has to offer.

For players who are already looking ahead to weapon progression, camo challenges, XP grinding and multiplayer unlocks, the beta is also a chance to start learning the game's systems and prepare for the full launch.

Once you're ready to take your Modern Warfare 4 progression further, check out EZBUFF's Modern Warfare 4 Bot Lobbies for more information about available bot-lobby services, including options designed around weapon XP, camo challenges and multiplayer progression.

Modern Warfare 4 Open Beta Weekend Two begins August 28, 2026, at 10:00 a.m. PT. No preorder or beta code is required to participate.