Rogue is a 1980 video game and one of the first roguelikes, the one for which all others are named. A top-down, dungeon crawling Dungeons-and-Dragons-like game, it used ASCII-based graphics to depict the dungeon, player and everything in the dungeon. One of the unique features of Rogue was that each new game had a completely new, randomly generated map. Most games of the time, such as Colossal Cave were completely pre-scripted, or had limited randomness. This feature became one of the defining elements of the roguelike genre.