What does 005 stand for? 

005

005 (pronounced "double-o five") is a 1981 arcade video game by Sega. They advertised it as the first of their RasterScan Convert-a-Game series, designed so that it could be changed into another game in minutes "at a substantial savings". It is one of the first examples of a stealth game. Largely inspired by James Bond, (the title itself is a tribute or parody to the secret agent's codename 007), the player's mission is to take a briefcase of secret documents to a waiting helicopter. The player controls a spy who must avoid the enemies as he makes his way through buildings and warehouses, where he will have to dodge the enemies' flashlights and use boxes as hiding spots.005 is also credited for being the first game to introduce the concept of "hub world" in games.

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