While previous titles in the series have focused on exploration and attempted to instill a sense of fear via limited ammunition and healing items, Resident Evil 4's game mechanics have been completely revamped to incorporate fast-paced gunplay, quick controls and shootouts involving massive crowds of enemies in large, open areas. One of the main influences of this was an expanded arsenal at the players disposal and the large quantities of ammunition available through ammunition drops and destructible items. Another would be the necessity to fight enemies, unlike previous titles where most enemies can be dodged or avoided completely.