(Image credit: Unknown Worlds) You start with just 20 inventory slots and five hotbar spaces in Subnautica 2 , which you'll fill up in a matter of minutes. After that, you'll be juggling storage chests and trying to find any nook and cranny to stow all your junk. So, finding out how to increase your inventory size is a high priority early on. The good news is that you can actually increase your inventory and your hotbar space, though it'll take a bit of work. While you're at it, I recommend building the Wakemaker and getting some O2 upgrades to make life easier. How to increase inventory size in Subnautica 2 (Image credit: Unknown Worlds) You can increase your inventory space by interacting with the terminal next to Biobeds inside colony outposts . Any time you see a blue lightstick, I recommend investigating the area, as there's likely a habitat you can explore containing a Biobed, a scannable tool, or other items you can collect.…