Pros:
+ the open world is handcrafted and intriguing from start to end
+ the map is large and much more intricate than expected at first
+ the sky box and day/night cycle are one of the best in gaming
+ feelings of discovery are persistent throughout the game
+ three different modes with plenty of anti-frustration features
+ PDAs are smartly used for creating story crumbs and guiding the player
+ incredible sound design that fits each situation perfectly
+ the visual design of the biomes is distinct and creative
+ great voice acting and good writing
+ movement in water feels smooth and responsive
+ the "gasping for air" mechanic when close to the surface is a great idea
+ scanning mechanic just works and rewards curiosity
+ discovery of new technologies always feels like a step forward
+ lack of lethal violence is a bold but compelling design decision
+ build sequences are mostly transparent and logical
+ not all technologies have to be found or created to finish the game
+ the final sequence of events feels like a true finale to the story

Cons:
- game is buggy: items get lost in the scenery, assets won't load etc.
- quitting and reloading from menu leads to a persistent game-breaking bug
- technical performance is choppy throughout
- enemy AI and animation are generally wonky
- no quick save or auto save option
- no quick reload option from the options menu
- walking on land is tediously slow and janky
- combat is unresponsive and lacks hit feedback
- dying deletes items from the inventory without notice
- reloading a game is usually preferable to dying and losing equipment
- item management is time consuming and generally cumbersome
- new equipment cannot be created with ingredients from storage
- base building is tedious and construction issues are not transparent
- finding blueprints for new items can get annoying
- endgame progression is not always clear

Magic Moments: Too many to count.
Seeing the double moons circling the planet at night for the first time. Following a certain signal to dry land and realising there is so much more to the story than is apparent at first. Entering a mech suit and punching space eels in the face.

Playtime: 30 hours in Freedom mode (without ever using the Cyclops). Platinum trophy unlocked.


Verdict:
Subnautica is more than just a great game: it is an important step in the history of its genre (and a perfect companion piece to one of the greatest games of its generation, Outer Wilds). It offers a unique setting, a rich atmosphere, and most importantly, a constant sense of discovery in a dangerous but beautiful world full of secrets and surprises. In addition to its satisfying gameplay loop and its great audio-visual design, it also tells a surprisingly complex story that slowly but effectively guides players throughout their journey, thereby vastly improving on the mostly bland and generic crop of similar survival games. Moreover, the option to eliminate tedious survival elements like gathering food and water is a welcome one, as is the bold design decision to eschew lethal violence against the animal population. Even though the technical limitations and issues are plentiful and tough to ignore, they are never grievious enough to give up the quest of surviving and ultimately overcoming the trials and tribulations of your temporary home.

So buy the game, strap in and get ready to crash on Planet 4546B, guided only by your own sense of discovery and willingness to explore. The depths are waiting.