The term "online game", when used by
oldschoolers, refers to sequential (non-simultaneous) multiplayer or single-player games played over a
BBS, an
echomail network or locally. Some of the most famous online games (or "
door games" as they were sometimes called) are
TradeWars 2002,
Legend of the Red Dragon,
The Pit, and
Operation: Overkill 2.