Prior to graphically oriented video games, roguelike games, including Beneath Apple Manor (1978) and the genre's namesake, Rogue (1980), used procedural generation to construct dungeons for ASCII- or regular tile-based systems. The procedural generation would define rooms, hallways, monsters, and treasure that the player would find. Roguelikes, and games based on the roguelike concepts, continue to be a popular genre, as it allows the development of complex gameplay without having to spend excessive time in creating a game's world.[3]