If you’ve ever sunk hours into exploring Wuthering Waves’ stunning open world, fought flashy bosses, or marveled at how smooth the combat runs even on mid-tier phones, you’ve probably wondered what engine does wuthering waves use to pull all that off. As someone who’s tested the game on three different devices over the past year, I can tell you the engine choice isn’t just a random tech detail—it directly impacts everything from load times to mod support to how often you’ll run into frame drops during crowded events. This guide breaks down everything you need to know about the game’s core tech, its pros and cons, and how you can tweak settings to get the most out of it no matter what device you play on.
What Engine Does Wuthering Waves Use, And Why Did Kuro Games Pick It?
When asking what engine does Wuthering Waves use, the short answer is a heavily modified version of Unreal Engine 4.26, customized extensively by Kuro Games’ internal development team. Kuro first cut their teeth working with UE4 on their hit action game Punishing Gray Raven, so they already had years of experience tweaking the engine to work well for fast-paced, anime-style action games before they started development on Wuthering Waves. A lot of fans assume they switched to Unreal Engine 5 after the 1.4 update added new ray tracing effects for PC and PS5, but that’s not the case—all those upgrades are built on top of their custom UE4 build, which they’ve been refining for over four years now.
They chose to stick with UE4 instead of moving to the newer engine for one big reason: accessibility. UE4 runs far better on lower-end and older mobile devices, which is a critical priority for a free-to-play gacha game that relies on a large global player base to stay profitable. The dev team also built their own custom tools for UE4 that let them roll out new character and event content much faster than they could if they switched to a new engine mid-development. That speed has been obvious post-launch, with consistent, high-quality updates dropping every six weeks without major performance bugs.
Key Engine Features That Shape Wuthering Waves’ Gameplay
The custom tweaks Kuro made to UE4 are responsible for most of the things players love about Wuthering Waves, from its distinct visual style to its snappy combat. You might not notice these features on your first playthrough, but they add up to a much smoother, more immersive experience than most other open-world gacha games on the market. Some of the most impactful engine features include:
You might notice that even during the busiest boss fights with 10+ particle effects popping off at once, the game rarely stutters on supported devices. That’s because Kuro’s dev team spent over two years optimizing the engine’s particle rendering system specifically for Wuthering Waves’ fast-paced combat. If you’re someone who likes tweaking settings to get better performance, you’ll also notice a lot of the graphics options align with standard UE4 presets, so you don’t have to guess what each toggle does.
Pros and Cons of Wuthering Waves’ Engine Choice
Kuro’s decision to stick with a custom UE4 build has paid off in a lot of ways, but it’s not a perfect choice. For most players, the upsides far outweigh the downsides, but it’s worth knowing the tradeoffs that come with this engine choice.
The biggest pros are all tied to accessibility and polish. First, broad device compatibility means you can play the game on phones that are 3-4 years old, no expensive upgrade required. I’ve tested it on a 2020 mid-range Android phone and it runs at a steady 30fps on low settings, which is more than enough to enjoy the story and combat. Second, there’s already a thriving modding scene for the game, since UE4 has been around for years and modders know how to work with it. We’ve already seen hundreds of custom skins, quality of life tweaks, and visual overhauls released by the community. Third, the engine is extremely stable at this point; launch bugs are rare, and most updates roll out without breaking existing features.
But there are downsides too. The biggest one is limited next-gen exclusive features. Since it’s UE4, we won’t get features like UE5’s Nanite or Lumen that would let the game have even more detailed open world environments with zero performance cost. PC players also occasionally run into shader compilation stutters, where the game freezes for half a second the first time you encounter a new enemy or area. That’s a common issue with UE4 games, and while Kuro has reduced it a lot with post-launch patches, it still pops up occasionally for some players. The custom modifications Kuro made to the engine also mean that big technical overhauls take longer to roll out than they would for a game using a stock engine build.
How To Optimize Wuthering Waves’ Engine For Your Device
No matter what device you’re playing on, there are small tweaks you can make to get the best balance of visuals and performance from the UE4 build. You don’t have to be a tech expert to make these changes, and most of them take less than a minute to apply.
For mobile players, the first setting you should turn off if you’re getting frame drops is dynamic weather effects. These are the most resource-heavy setting for most phones, and you won’t lose much visual quality by disabling them. You should also turn off background app refresh while you’re playing, since other apps running in the background will take up RAM that the game needs to run smoothly. If you play on a budget phone, dropping the resolution to 720p will also give you a huge performance boost with barely noticeable visual differences on a small screen.
For PC players dealing with shader stutters, go to the game’s graphics settings and turn on shader pre-caching. This will load all common shaders when you first boot up the game instead of loading them on the fly, which eliminates almost all stutter during gameplay. You can also lower the shadow quality setting, which is another big performance hog that most people barely notice when it’s turned down a notch. If you have an NVIDIA GPU, turning on DLSS will give you a huge frame rate boost with almost no loss in visual quality.
For PlayStation players, you don’t have a lot of custom settings to tweak, but you should prioritize performance mode over quality mode if you care about smooth combat. The game runs at a steady 60fps in performance mode, and the visual difference between 4K and 1440p on most TVs is barely noticeable during fast-paced fights. I’ve tested both modes extensively, and I always stick to performance mode for the smoother gameplay.
At the end of the day, knowing what engine does wuthering waves use helps you make smarter choices about your settings, understand why the game runs the way it does, and even decide if you want to try modding down the line. Kuro Games’ choice to use a heavily modified Unreal Engine 4 build wasn’t the flashiest option, but it’s clearly worked for them—they’ve built a stunning, accessible open world game that runs well on almost every device, with a combat system that feels smooth and responsive no matter what you’re playing on. If you’re still running into performance issues after trying the tweaks we listed, you can always check the official Wuthering Waves forums for device-specific tips from other players who have the same hardware as you.