The game takes place underwater, and with that it looks quite good for an underwater game. Looking up at the sun through the ocean looks pleasant and real. Coral reefs have multiple colors and look real as well. Graphics wise this game looks great and pulls off its theme of an underwater survival quite well.

Play environment that's completely unique and never done before.

The sound design in Subnautica is amazing. Even though the soundtrack can be bland at times, the sound effects for the ocean noises are incredibly atmospheric and really help to get the player in the mood for exploring a vast, alien ocean.

The sound design is absolutely remarkable, along with the game's feel and gameplay.

The creature design in Subnautica deserves some major praise. Spotting a new, never seen before creature is extremely rewarding and there's a large variety of alien creatures to look for.

The whole process of creating new tools is mostly done using a sophisticated 3D-printer available from the start of the game. You gather various resources and transform them to create tools that you will need for your survival.

For example, organic matter gets printed into raw carbon, combine carbon with some zinc and you get a battery; combine that battery with some glass and you get a flashlight that helps you see in the dark. It's very straightforward but incredibly satisfying when you build your tools, especially since you are doing all of this while swimming in an ocean filled with predators.

Subnautica has three game modes: survival, freedom, and creative. The first one pits the player against the elements and forces them to think about food and water through its thirst and hunger mechanics.

The second game mode basically removes every mechanic that is related to surviving, such as the aforementioned hunger and thirst mechanics. It also leaves all the items in your inventory after you die. In other words, it's a game mode for people who want to explore without having to bother with surviving. Which is nice, since Subnautica has a lot of stuff to explore.

The third one will let you build a base of your dreams without worrying about food, oxygen, or thirst. It is the best mode for people who want to build and don't want to gather resources.

The devs are very reliable when it comes to constantly fixing bugs and improving the game.

Not every damn thing needs multiplayer, and multiplayer can often ruin an otherwise incredible experience. There's none to be found here, and that intensifies the lonely atmosphere. Also, the creators didn't waste resources on something that would fundamentally undermine the experience so they could focus on making the game the wonderful thing that it is.

But it goes faster when you learn the game. Because everything is done manually.