Video Games Encyclopedia

Looter shooters are shooter games where the player’s overarching goal is the accumulation of loot: weapons, equipment, armor, accessories and resources. To achieve this players complete tasks framed as quests, missions or campaigns and are rewarded with better weapons, gear and accessories as a result, with the qualities, attributes and perks of such gear generated randomly following certain rarity scales (also known as loot tables). The better gear allows players to take on more difficult missions with potentially more powerful rewards, forming the game’s compulsion loop. Loot shooters are inspired by similar loot-based action role-playing games like Diablo. Examples of loot shooters include the Borderlands franchise, Warframe, Destiny and its sequel, and Tom Clancy’s The Division and its sequel.

Reference: Wikipedia