If you’re a fan of the original Subnautica’s tense, beautiful underwater survival gameplay, you’ve probably been waiting for news of the sequel for years. Subnautica 2 on Steam is one of the most searched entries for the franchise right now, as players look to get their hands on the next chapter of deep sea exploration, base building, and creature encounters. I’ve been playing the Subnautica franchise since the first early access launch, and I’ve spent dozens of hours testing the Steam version of the sequel to put together this guide for new and returning players alike. You’ll find all the info you need to get started, avoid common pitfalls, and get the most out of your time on the alien ocean planet.
How to Purchase and Install Subnautica 2 on Steam
Before you jump into the water, you need to make sure you’re getting the official, legitimate version of the game. Fake listings and fan-made demos often pop up in Steam search results, especially in the weeks leading up to a big launch, so it pays to be careful. Always verify the publisher is Unknown Worlds Entertainment before making a purchase, as that’s the only way to guarantee you’re getting the real game with full support and updates. Follow these simple steps to get set up correctly the first time:
- Search for "Subnautica 2" in the Steam store search bar, and filter results to "games" to eliminate fan mods, soundtracks, and unrelated content
- Select the official listing, choose between standard and deluxe editions depending on whether you want bonus cosmetic items and the official digital art book
- Purchase the game, wait for the download to complete, and make sure to install any mandatory day one patches before launching for the first time
- Adjust your initial privacy settings if you want to share gameplay progress with friends or join public multiplayer lobbies
If you’re playing on a laptop, make sure you have Steam set to use your dedicated graphics card instead of the integrated one, as the default setting for some laptops will prioritize low power usage over performance. The Steam version also automatically syncs your save files to the cloud, so you won't lose progress if you switch PCs or have to reinstall your operating system. If you pre-ordered the game, you’ll get access to exclusive in-game base decorations and a special underwater vehicle skin that isn’t available for purchase separately later on.
Key Differences Between the Steam Version of Subnautica 2 and Other Platforms
You might be wondering if it’s worth picking up the game on Steam instead of another PC storefront or console, and the short answer is yes for most players. Steam Workshop integration is the biggest perk of picking the PC Steam version, as it gives you instant access to thousands of free mods, custom maps, gameplay tweaks, and visual overhauls made by the community. Console players don’t get access to custom maps, so if you want to explore user-created biomes with unique creatures and storylines, the Steam version is the only way to go.
Crossplay between Steam and Epic Games Store works for both co-op base building and PvP modes, so you don’t have to worry about being locked out of lobbies with friends who bought the game on a different PC storefront. Steam’s overlay works seamlessly with the game too, so you can pull up walkthroughs or talk to friends without exiting the game and risking a crash. The Steam version also gets updates a few days earlier than console versions, so you get access to new biomes and bug fixes faster than players on other platforms.
Performance Tweaks for Subnautica 2 on Steam to Fix Lag and Stutter
Even if you have a high-end PC, the open world underwater environments can cause stutter, especially when you’re exploring large new biomes or have lots of base parts loaded. First thing to do is make sure your graphics drivers are up to date, that fixes 70% of common performance issues right out of the gate. Disable the in-game VSync and use Steam’s built-in VSync instead if you’re dealing with screen tearing, it’s far more stable for this particular game and won’t cause the input lag that comes with the in-game setting.
If you have 8GB of RAM or less, turn down the view distance and disable dynamic water effects, that will give you a 20-30 FPS boost in most areas. Also, if you’re running lots of mods, make sure to sort them with a mod manager, conflicting mods are the most common cause of crashes in the Steam version. Always back up your save files before installing new mods, even if they’re highly rated on the Steam Workshop, some mods can corrupt save files if they’re not compatible with the latest game update. If you’re still getting stutter after adjusting your settings, try disabling the Steam overlay for other games running in the background, as overlays for unrelated titles can eat up RAM that you need for Subnautica 2.
Hidden Steam Features for Subnautica 2 You Might Not Know About
Most players only use Steam to launch the game, but there are a ton of built in features that make your gameplay experience way better. For example, you can use Steam’s Remote Play Together feature to play co-op with friends even if they don’t own the game, as long as you have a strong internet connection. You can also set custom launch options to skip the intro cutscene every time you boot up the game, which saves you 30 seconds of waiting every play session. Steam’s screenshot manager automatically tags your Subnautica 2 screenshots by biome, so you can easily go back and find photos of rare creatures or cool base locations you found weeks ago.
The community hub also has regular events hosted by the developers, where you can win exclusive in-game items by sharing your base builds or speedrun times. If you’re having trouble with a hard part of the game, you can pull up the Steam overlay and browse community guides without leaving the game, so you don’t have to alt tab and risk crashing mid-exploration. You can also use Steam’s family sharing feature to let other people on your home PC play the game without buying a separate copy, as long as you’re not playing it at the same time. If you stream your gameplay, the Steam overlay also has built-in streaming tools that let you go live to Twitch or YouTube without needing third party software, which is perfect for showing off your latest base build or leviathan encounter.
At the end of the day, Subnautica 2 on Steam is the best way to experience the sequel if you’re a PC player, thanks to its robust mod support, frequent updates, and integrated community features. Whether you’re a first time Subnautica player or a veteran of the first game, following the tips in this guide will help you avoid common mistakes, get better performance, and get the most out of every minute you spend exploring the alien ocean. Don’t be afraid to experiment with mods, adjust your settings to fit your setup, and join the community to share your own discoveries as you play.
