Adventure game
An adventure game is a video game in which the player assumes the role of a protagonist in an interactive story driven by exploration and puzzle-solving. The genre's focus on story allows it to draw heavily from other narrative-based media, literature and film, encompassing a wide variety of literary genres. Many adventure games (text and graphic) are designed for a single player, since this emphasis on story and character makes multi-player design difficult. "Colossal Cave Adventure" is identified as the first such adventure game, first released in 1976, while other notable adventure game series include "Zork", "King's Quest", "The Secret of Monkey Island", and "Myst".
History of online games
The first of these remote display games was Xtrek. Based on a PLATO system game, Empire, Xtrek is a 2D multiplayer space battle game loosely set in the Star Trek universe. This game could be played across the Internet, probably the first graphical game that could do so, a few months ahead of the X version of Maze War. Importantly, however, the game itself was not aware that it was using a network. In a sense it was a host-based game, because the program only ran on a single computer, and knew about the X Window System, and the window system took care of the networking: essentially one computer displaying on several screens. The X version of Maze War, on the other hand, was peer-to-peer and used the network directly, with a copy of the program running on each computer in the game, instead of only a single copy running on a server. Netrek (originally called Xtrek II) was a fully network-aware client–server rewrite of Xtrek. Other remote X display based games include xtank and XPilot (1991). By 1989 Simson Garfinkel reported that on MIT's Project Athena, "Games like 'X-tank' and 'X-trek' let students at different workstations command tanks and starships, fire missiles at each other as fast as they can hit the buttons on their mice, and watch the results on their graphics displays". Observers estimated that up to one third of Athena usage was for games.