When you’re playing an extraction shooter, your inventory is one of the most important elements that you need to manage. The main goal of most drops is to acquire as much loot as possible, and if you have a small inventory, then you can’t take a ton of loot with you when you go to extract from the map. The same is true in Marathon, and the default backpack you’re given to start the game doesn’t hold an overwhelming number of inventory slots.
So, sooner rather than later, you’re going to want to increase the overall size of your backpack’s inventory. However, that’s easier said than done in Marathon, as it all comes down to good, old RNG. Below, we’ll walk you through how to upgrade your backpack and increase your inventory capacity in Marathon.
How to increase inventory slots in Marathon
While it might sound a little counterintuitive, the only way to increase your inventory size in Marathon is to equip a backpack. By default, your loadout comes with a standard backpack that’s able to hold eight inventory slots. This default backpack is equipped on your loadout at all times, even if you die, so you’ll always have at least eight slots in your inventory.

