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What Is Cross-Gen? Why Games Like Warzone Eventually Drop PS4 and Xbox One

Warzone just stopped working on PS4 and Xbox One, six and a half years after launch. Here's what a cross-gen game is, why publishers release games on two console generations at once, what holding on to old hardware costs developers, how upgrades and cross-progression work, and the signs that a game is about to leave older consoles.

Zerocade · 5 min read
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Official Xbox backward compatibility artwork for Xbox Series X|S
Image: Microsoft / Xbox

The short version

  • A cross-gen game comes out on two console generations at once, like PS4 and PS5, or Xbox One and Xbox Series X|S.
  • Publishers do it because the old consoles still have tens of millions of players when the new ones launch.
  • It costs them, because every feature has to work on hardware from 2013. Eventually, the new game is held back more than the old players are worth.
  • Call of Duty: Warzone is the latest example. It stopped working on PS4 and Xbox One on November 6, 2026, when Modern Warfare 4's Season 1 began.

What "cross-gen" means

When a new console generation starts, almost nobody owns the new machines yet. The PS5 and Xbox Series X|S arrived in November 2020, but the PS4 had already sold over 100 million units. A publisher that released only on PS5 in 2021 would have cut itself off from most PlayStation players.

So for the first few years, big games often come out on both generations. Horizon Forbidden West and God of War Ragnarök both launched on PS4 and PS5 in 2022. Live-service games stretch it further, because they keep running for years. Warzone launched on March 10, 2020, months before the new consoles, and supported both generations for more than six and a half years.

The opposite is a current-gen only game. Marvel's Spider-Man 2 (2023) skipped the PS4, and GTA 6 is coming only to PS5 and Xbox Series X|S. Our guide on how console cycles work explains where these phases fall in a generation.

Why the old consoles hold games back

The gap between the generations is huge. Here are Sony's launch specs side by side.

Zerocade comparison of PS4 and PS5 launch specs: GPU 1.84 to 10.28 TFLOPS, memory 8GB GDDR5 to 16GB GDDR6, CPU 1.6GHz Jaguar to 3.5GHz Zen 2, and a hard drive to a 5.5GB/s SSD

Image: Zerocade

Each of those numbers limits what a cross-gen game can do.

Storage speed. The PS4 and Xbox One use hard drives. Games designed for them have to hide slow loading with lifts, narrow corridors and long load screens. A PS5 SSD can load data in a fraction of the time, but a cross-gen game can't build its world around that, because the old version still has to work.

The processor. The old consoles use AMD's low-power Jaguar cores, built for cheap laptops. Physics, AI and the number of players in a match all run on the CPU. In a battle royale with a big map and dozens of players, the old CPU is often the hard limit.

Memory. Both old consoles have 8GB of memory shared between the game and the system. That limits texture quality, how much of a map can be loaded at once and how detailed each area can be. Our guide to VRAM explains why memory matters so much.

Testing and patches. Every update has to be built, tested and certified on extra platforms. For a game that patches every few weeks, that's a lot of work for a shrinking group of players.

How cross-gen support ends

It usually happens in stages, and Warzone followed the pattern.

Zerocade timeline of Warzone on old consoles: PS4 and Xbox One launch in November 2013, Warzone launches in March 2020, PS5 and Xbox Series arrive in November 2020, Modern Warfare 4 skips old consoles in 2026, and Warzone drops them on November 6, 2026, a run of 6 years and 8 months

Image: Zerocade

  1. The sequels drop the old consoles first. Modern Warfare 4 skipped PS4 and Xbox One entirely.
  2. The store closes. According to Analytics Insight, Warzone was removed from the PS4 and Xbox One stores in June, and its in-game shop on those consoles closed later that month.
  3. The servers switch off. For an online-only game like Warzone, that ends it for good on that hardware.

A single-player game is different. Once you own it, it keeps working on the old console. Our guide to delisted games and server shutdowns covers what you keep in each case.

What happens to your progress and purchases

This is where cross-gen gets friendlier than it used to be. Many big games now use cross-progression, where your progress is tied to an account rather than a console. Warzone's progression carries over to a new platform if you log in with the same linked Activision account.

Backward compatibility helps too. The PS5 plays most PS4 games, and Xbox Series X|S plays Xbox One games, so many old purchases come with you. Some publishers also offer upgrades from the old version to the new one. Microsoft calls this Smart Delivery. On PlayStation, upgrade offers vary from game to game, and some cost extra.

Signs a game is about to drop old consoles

  • The sequel or new season is current-gen only. That's the clearest sign.
  • The old version stops getting new features. If new modes or maps don't arrive on PS4, the end is usually close.
  • The store listing disappears. Delisting usually comes before servers go dark.

If you're still on a PS4 or Xbox One, this is the hard part of a generation shift. The PS5 launched in India at ₹49,990 for the disc model and now costs ₹69,990, so upgrading costs more today than it did in 2020. Before you do, link your accounts, so your progress is waiting on the new machine.

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