Resident Evil 4 Gameplay 4

The inventory system of the game features a grid system, represented by an attaché case, that has each item take up a certain number of spaces. The case can be upgraded several times, allowing for more space. Weapons, ammunition and healing items are kept in the case, while key items and treasures are kept in a separate menu. Items may be bought from and sold to a merchant that appears in various locations throughout the game. He sells first aid sprays, weapons, allows for weapons to be upgraded and buys various treasures that Leon finds. The various weapons each have their own advantages and disadvantages.^[6][7]