19 Best Subnautica Mods To Download In 2025
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19 Best Subnautica Mods To Download In 2025

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The original Subnautica is one of the best survival games to ever arrive in the genre, but that doesn’t mean you can’t improve the vanilla version with a few of the top mods made by the community. While the Subnautica modding community doesn’t feature expansive, DLC-sized mods like some other game sections on Nexus Mods, there are hundreds of useful, quality-of-life mods that can enhance your experience on Planet 4546B. From inventory management improvements to better base building to full-on new vehicles, you can find a slew of mods to make Subnautica a better overall game.

We’ll be going over the best Subnautica mods that you can find on Nexus Mods. As a note, this only includes the original game and not Below Zero, as that’s an entirely different section and features completely separate mods. You’ll also want to ensure you have the right version of the game downloaded for the mod you’re trying to install; some mods are only compatible with older or newer versions of the game.

Map

The Map mod is one of the best ways to improve your overall experience in Subnautica. While there is something alluring about exploring Planet 4546B without any guidance, having a map to show you where you are, what’s surrounding you, and even which biome you’re in can be a huge quality-of-life improvement. The mod displays all of this information; however, the mini-map is fogged out when you begin a playthrough. You can only uncover the fog by traversing the map, so you still have to do a lot of exploration work yourself.

All Items 1×1

  • Creator: MrPurple6411 and Cookay
  • Download Link: Nexus Mods

Inventory management is one of the most important yet frustrating aspects of Subnautica. Perhaps the most annoying element of the inventory is that some items you pick up take up more than one inventory slot, forcing you to maneuver different items into certain areas so you can carry more loot. However, with the All Items 1×1 mod, you don’t have to worry about that any longer. The mod makes it so every item you pick up, big or small, only takes up a single inventory slot.

EasyCraft

Subnautica is loaded with dozens of resources and blueprints that require those resources to craft. Trying to remember which resources are needed to craft a certain blueprint can get tedious, as you need to then go and fetch the resources from your many storage containers. Luckily, the EasyCraft mod makes the crafting process much more efficient. It automatically crafts the ingredients you need for a given blueprint and takes the resources the recipe needs from your base’s storage. This means you don’t need to have the resources physically in your character’s inventory anymore.

MoreQuickSlots

By default in Subnautica, you’re only given a handful of quickslots that you can use to easily access certain tools or items. The MoreQuickSlots mod does exactly what you think it does: gives you more quick slots to use, 12 to be exact. This allows you to add more tools, weapons, or items to your quick slots hotbar so you can use them as fast as you can press their dedicated button.

Cyclops Docking Mod

The Cyclops is easily one of the most unique and thrilling upgrades you can obtain in Subnautica. Being able to roam the ocean in a massive submarine with a slew of storage opens up so many more avenues for players. However, the main issue with the Cyclops is that, due to its hulking size, there is no way to dock the vehicle at your base. The Cyclops Docking Mod makes it possible, though, by adding a tube that connects to the top of your base and allows the submarine to dock above a habitat. Now, you can always remember where you left the Cyclops.

Advanced Inventory

We have another mod to improve your inventory in Subnautica, and this time it’s the Advanced Inventory mod. This is a simple addition to your game that expands the inventory to include more slots, allowing you to carry more loot at a given time. The mod also adds hotkeys so you can quickly sort your inventory or move all your items into a storage container with one click. Once you download this mod, it’s difficult to go back to the vanilla inventory in Subnautica.

Habitat Platform

In the first Subnautica, you’re not allowed to build a base on dry land, only underwater. While this makes sense given the nature of the game, you might want a nice, safe above-water habitat that you can visit in between your deep ocean excursions. The Habitat Platform mod delivers just that, allowing you to build a base on top of a large platform in the ocean. You can build all of the same base stations, habitat pods, and other items, but this time, you’re safely above the water.

Alterra Sea Voyager

We all love the Cyclops, but it can be a bit clunky to navigate between all of the cavernous areas of Planet 4546B. To make your sea travels simpler and faster, you can add the Alterra Sea Voyager mod to your game. The Alterra Sea Voyager is a boat that travels above the water, allowing you to skip all of the slow and difficult navigation that sometimes comes with the Cyclops. Now, you can hop in your boat, which is roughly the same size as the Cyclops, easily travel to a destination, and hop back out into the water to resume your exploration.

Grappling Arm Upgrade

The Prawn Suit’s best feature in Subnautica is its grappling arm, which allows you to swing from surfaces like an underwater Tarzan and grab items that are a little out of your normal arm’s reach. However, the default grappling arm mod for the Prawn Suit has some limitations. Fortunately, those are all fixed with the Grappling Arm Upgrade mod. The mod gives the grappling arm more length, strength, and speed, allowing much more freedom when using the Prawn Suit.

Stealth Module

If you’re someone with a true fear of the leviathans that roam the waters of Subnautica, or you’re just looking for a relaxed playthrough, consider downloading the Stealth Module mod. This mod allows you to add a vehicle upgrade on your Seamoth, Cyclops, and Prawn Suit that turns you nearly invisible to sea creatures. While they can still see you if you make enough noise or get too close, they won’t be able to detect you nearly as easily as before.

Cyclops Strafe

As we have stated a few different times throughout this list, the Cyclops is a massively fun vehicle to use, but it can be challenging to navigate with it. To make that process a whole lot simpler, you can download the Cyclops Strafe mod, which allows you to seamlessly move side to side with the submarine. This dramatically changes the Cyclops’ movement, as previously, you could only move very rigidly, which made it difficult to fit into tight crevices as you went deeper into the ocean.

Debris Recycling

Have you ever looked at a piece of salvage from the Aurora and thought to yourself, “Sure would be nice if I could scrap that for some metal salvage?” Well, now, that fantasy can become reality with the Debris Recycling mod. The mod allows you to salvage just about any wrecked piece of the Aurora that you find on the ocean floor. In turn, you’ll receive metal salvage, which is needed for dozens and dozens of crafting recipes. No longer will you have to find dedicated metal salvage scraps in Subnautica, saving you a ton of time with base building and gear upgrades.

Seamoth Thermal Reactor

While the Seamoth isn’t the vehicle that you’ll use for the later game in Subnautica, it is the vehicle that gets you through the entirety of the early game. Exploring the shallows and other starter areas is done with a Seamoth, and until you get a Prawn Suit or Cyclops, you’re likely going to go through dozens of batteries to keep the small vehicle charged. If you never want to insert another battery into your Seamoth, you can download the Seamoth Thermal Reactor, allowing you to place your Seamoth over a heat source to charge it. Geysers work best for this, as they’re plentiful in the early areas and are risk-free to visit.

Increased Resource Spawns

Let’s face it, grinding out resources can be a real chore in Subnautica. While that is the intention, sometimes you just want to find resources more frequently when you’re out exploring. If you’ve ever felt that way or think it would be beneficial to your playthrough, then download the Increased Resource Spawns mod. With this mod you’ll see more resources scattered around all parts of the map, making it much easier to grab everything you need, head back to your base, and craft whatever you need the extra resources for.

Keep Inventory On Death

Dying in Subnautica is not something you want to do frequently. Unlike other survival games, you can’t simply go back and retrieve the loot you had on you when you die. Instead, that loot is gone, and when you spawn back at your base or habitation pod you’ll see an empty inventory. If you want to avoid that situation and potentially lose hours of progress, then you can download the Keep Inventory On Death mod. This allows you to keep your entire inventory in the event you die, which can save you a ton of time in the long run if you’re prone to running out of oxygen or getting mauled by reapers.

BlueprintTracker

Have you ever been out on a long expedition in Subnautica in order to find materials for a specific blueprint? Well, in all likelihood, you’ve probably forgotten the exact quantity of materials you’ve needed when out exploring the ocean. To make sure you never forget the materials you need again, you can download the BlueprintTracker mod. This mod allows you to add visual recipes for specific items on your screen, and the recipes will update every time you collect a material you need for a given recipe. Now, you’ll always be able to see when you find enough materials for a blueprint in real time.

Decorations Mod

Not all mods in Subnautica need to directly affect gameplay. Sometimes, a mod that simply cosmetically enhances your experience is all you need. To add some spice to Subnautica, you can download the Decorations Mod. This mod adds dozens of new craftable pieces that aim to add flair to your base. You can build decorations of all shapes and sizes, and you’re free to place the items anywhere you want. Now you don’t have to go foraging inside the old ruined bases in Subnautica for sparse decorations that all look similar.

Laser Cannon

If you’re tired of being scared by the leviathans that patrol the waters of Subnautica, then you can take matters into your own hands with the Laser Cannon mod. This gives you a devastating weapon that can be attached onto your Seamoth, which shoots dual lasers at anything in front of you. You’ll deal quick and painful damage to any creature that gets in its path, meaning you can rid the waters of any leviathan.

Cyclops Nuclear Reactor

  • Creator: FCStudios – PrimeSonic
  • Download Link: Nexus Mods

Building the Cyclops is one of the pinnacle moments for any player in Subnautica. However, after you build the Cyclops and drive it around for a bit, you’ll notice that it consumes a massive amount of energy. This requires you to constantly charge and swap out the batteries at the back of the ship, which can get extremely tedious. Fortunately, the Cyclops Nuclear Reactor mod aims to solve those problems. The mod allows you to upgrade the Cyclops to nuclear energy, effectively making it so the ship almost never runs out of energy. While you will still have to charge the reactor, it can go for much longer than the standard batteries.

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