As you gather resources or items, they will be placed automatically in your inventory. Therefore, managing the inventory content is a vital element of the game, especially at the beginning of the game when you have a small set of slots.
Move items from one slot to another
Keyboard/Mouse: Click on an item, hold the mouse button, move to another slot, and release the mouse button.
Drop items from your inventory
Keyboard/Mouse: Click on an item, hold the mouse button, move to an empty area, and release the mouse button. The item will drop in the world somewhere around you.
Upgrade the inventory
You start the game with 8 slots.
Many resources you gather can be stacked together in a single slot, but some items, like machines or components, cannot be stacked.
As you progress in the game, you will be able to upgrade your inventory from 8 to 24 slots.
Each upgrade gives you 4 more slots to store items.