Marathon actively centers around loot that you get from your runs, and it's an important task to manage your inventory to keep more items with you.
When you begin, the inventory size won't be much of an issue. You can keep going on your run and bring you new loot as much as you can. However, the limited inventory starts to become an issue once you're past the initial stage. A few runs with Sponsored kits quickly add to the list of items you have (as long as you manage to complete the run without getting killed).
