In RTS, raid refers directly to military terminology. It means launching a lightning attack on a specific target and returning to previous positions just as quickly before enemy forces are able to regroup and launch a counterattack.
In MMORPGs, a raid is a special type of mission that consists in eliminating a large number of enemies and. Less often the phrase is used to refer to clashes between two large groups of players.
Raids often take place in specially designated locations. Due to the high level of difficulty, players participating in them must cooperate and stick to strictly defined roles. We often talk not only about the tank, healer and DPS, but also about the leader coordinating the activities of the entire group. Completing a raid will most often result in obtaining unique loot.