Answer: Artificial Intelligence
More information: Since classic games like "Space Invaders", "Galaxian" and "Pac-Man" successfully implemented artificial intelligence decades ago, it was become a stable in the videogame industry.
Answer: Little Mac
More information: Little Mac is but a wee fighter yet can defeat the one-punch wonder Mike Tyson if the gamer is fast enough.
Answer: Orcs & Humans
More information: The first Warcraft was called "Orcs & Humans", and various aspects of the game, such as its multiplayer functionality and real-time strategy play, helped revolutionize the videogame industry.
More information: Though forgettable in its home-console form, the arcade version of Michael Jackson "Moonwalker" (1990) is a much-more entertaining experience.
More information: Knuckles is an echidna, a type of animals that lives off of ants and termites and resides in Australia and New Guinea.
Answer: Gold farming
More information: Some people, particularly in developing countries, actually make a livable income from gold mining videogame currencies.
More information: Atari released Pong in 1972 and with it ushered in the age of the modern videogame industry.
More information: The PlayStation was originally a CD-ROM add-on for the Super Nintendo. Nintendo pulling out of the deal in 1991 prompted Sony to eventually produce it on their own.
Answer: Lara Croft
More information: Lara Croft's traditionally-large bosom was actually the result of a coding error made by the programmer of the original "Tombraider" game.
Answer: The Covenant
More information: The Covenant deem it the will of their gods that they destroy the human race.