When you first jump into The First Descendant, you’ll probably notice the crisp, detailed open world, smooth combat animations, and almost no texture pop-in even when you’re flying across the map at top speed. A lot of that polish comes down to the underlying tech powering the game, so if you’ve ever wondered what engine is The First Descendant on, you’re not alone. Thousands of players ask this question every month, since the engine directly affects everything from how the game runs on your hardware to how often you run into bugs during co-op boss runs. I’ve logged over 120 hours across PC, PS5, and Xbox Series X, so I’ve seen first-hand how the game’s engine shapes every part of the player experience, from casual exploration to high-stakes endgame raids.
What Engine Is The First Descendant On, And Why It Matters For Players
The First Descendant runs on Unreal Engine 5, specifically the 5.1 build at launch, with regular updates to newer UE5 versions rolled out alongside regular content patches. Nexon chose Unreal Engine 5 for the game because they wanted to build a cross-platform looter shooter that could deliver high-fidelity graphics on next-gen consoles while still running smoothly on mid-range PCs and older console hardware. A lot of players assume a game with this level of visual detail would only work on high-end rigs, but the dev team did an impressive job optimizing the UE5 toolset for lower-spec devices. I tested the game last month on a 4-year-old mid-range laptop with a GTX 1660, and I still got a steady 45 FPS on medium settings, which is more than enough for casual play through the main story missions.
Unlike custom-built engines that are only designed for one specific game, Unreal Engine 5 has a massive global community of developers working on fixes and optimizations every day, which means The First Descendant gets performance patches much faster than many other live service looter shooters. That’s a huge benefit for players, because common issues that would take months to fix on a custom engine can be resolved in a matter of weeks with UE5’s existing support resources. The dev team also has access to pre-built tools for crossplay, anti-cheat, and content creation that let them focus on adding new characters and missions instead of building basic systems from scratch.
Key Unreal Engine 5 Features Used In The First Descendant
The dev team didn’t just pick UE5 for its brand recognition; they built the entire game around some of the engine’s most innovative features to make the gameplay feel more immersive. First up is Nanite, UE5’s virtualized geometry system. Nanite is the reason you can stand on top of the highest peak in the Vyliss region and see every tiny detail of enemy outposts 5 kilometers away without any blurry texture pop-in as you move closer. Before Nanite, devs had to use lower-resolution models for distant objects to save performance, which led to jarring moments where assets would suddenly switch to higher quality right in front of your eyes. You won’t run into that issue in The First Descendant, even when you’re speeding across the map on a hoverbike.
Next is Lumen, UE5’s real-time global illumination system. Lumen makes light react naturally to all surfaces in the game, so when you’re fighting a boss in a dark underground bunker, the glow from your weapon’s muzzle flash will bounce off walls and illuminate enemies hiding around corners. That’s not just a visual flourish either; if you pay attention, you can use those dynamic light reflections to spot enemies before they see you, which gives you a small but real advantage in tight combat encounters. The game also uses UE5’s Chaos physics engine, which makes every interaction feel far more tangible than pre-scripted animations. Chaos physics makes every explosion, enemy knockback, and environmental destruction feel unique, so blowing up a cover wall with a rocket launcher will never look or play the same way twice. You can even use falling debris from destroyed structures to damage enemies below if you time your shot right.
How The First Descendant's Engine Impacts Your Gameplay Experience
The biggest benefit of UE5 for most players is seamless cross-platform consistency. No matter if you’re playing on PC, PS4, PS5, Xbox One, Xbox Series X/S, or Nintendo Switch, the core gameplay feels exactly the same across all devices. UE5’s built-in cross-platform tools make it easy for the dev team to push identical updates, balance changes, and new content drops to all platforms at the exact same time. You won’t run into the frustrating situation where PC players get a new character or game mode 2 weeks before console players, which is a common complaint with live service games that use custom-built engines. The engine’s built-in netcode also makes co-op play far more stable, so you’ll rarely run into lag or connection drops even when you’re playing with friends on different platforms from across the world.
There are a few small downsides to the UE5 build too, though. If you turn all graphical settings up to max on a mid-range PC, you might notice small frame drops during 4-player endgame raids where there are dozens of explosions, ability effects, and enemies on screen at the same time. That’s not a flaw with the game itself, just a tradeoff that comes with UE5’s advanced graphical features. The dev team has added dozens of toggleable settings to let you turn off features you don’t care about to boost performance, so it’s easy to find a balance that works for your setup. Another big plus is that UE5’s widespread popularity means there’s already a small but active modding community making custom skins, quality of life mods, and custom difficulty levels for PC players. Just make sure you only use mods in single-player mode, because using them in online co-op can trigger the anti-cheat system and get your account banned.
Recommended Settings To Get The Most Out Of The First Descendant's Engine
I’ve tested dozens of setting combinations across 3 different devices to find the best balance between graphical quality and performance for every type of player. These settings are optimized to reduce unnecessary frame drops without sacrificing the core visual and gameplay experience that makes The First Descendant stand out from other looter shooters:
- For high-end PC (RTX 3070 or higher / PS5 / Xbox Series X): Keep Nanite and Lumen turned on, set shadow quality to high, and enable DLSS/FSR quality mode. You’ll get a steady 60 FPS at 4K resolution with all the game’s stunning visual effects intact, which is the best way to experience the open world and cinematic boss fights.
- For mid-range PC (GTX 1660 / RTX 2060 / PS4 Pro / Xbox One X): Turn off Lumen, set shadow quality to medium, and enable DLSS/FSR performance mode. You’ll lose some of the dynamic lighting effects, but you’ll get a steady 60 FPS at 1080p, which is perfect for competitive co-op runs where frame rate matters more than visual flair.
- For low-end PC / laptop (pre-2019 hardware / base PS4 / Xbox One): Turn off both Nanite and Lumen, set all graphical settings to low, and enable FSR performance mode. You’ll notice some blurry distant textures and simpler environmental details, but you’ll still get a playable 30-45 FPS that’s enough to run all story missions and most co-op content without issues.
No matter what device you’re playing on, make sure you turn off motion blur and depth of field if you’re prone to motion sickness. Those effects are enabled by default, but they don’t add much to the experience and can make long play sessions feel uncomfortable. If you’re playing co-op with friends, you can also turn down enemy ability effect visibility to reduce clutter on your screen, which makes it much easier to spot boss attack tells and avoid taking unnecessary damage during raids.
Now you know exactly what engine is The First Descendant on, and how you can adjust your settings to get the best possible experience no matter what device you’re using. I’ve spent dozens of hours tweaking settings and testing performance across different hardware, and I’m still impressed by how well the dev team optimized UE5 to work well for both casual players on older consoles and hardcore players with high-end rigs. If you’re just getting started with the game, take 5 minutes to adjust your settings before jumping into your first mission, it’ll make your first few hours of play far more enjoyable. If you have other questions about performance or hidden engine features, drop a comment below and I’ll help you figure out the best setup for your playstyle.