Role-playing video games
The Ultima series of RPGs marks one of the first uses of an overworld. Many games have emulated Ultima's overworlds, especially fantasy-based ones. The most prominent example in this category is the Dragon Quest series. In each of this type of overworld game, most of the action (or at least most of the plot-advancing action) takes place in towns, forests, dungeons, caves, castles (and the surrounding area), camps, fortresses, mass transportation systems, celestial bodies (e.g. the moon), and other locations. In the Dragon Quest series, the overworld is used as a "travel map", and changes to a closer perspective for direct gameplay or confrontation. The overworlds featured in most of the 2D adventures of this genre commonly depict the character(s)' proportions as larger than they actually would be in the world being traveled, thus lending necessary visibility to the player. The characters' animation in this type of overworld is often simpler than that found in the game's menus and other areas, while more complicated movement such as combat, climbing or visibly handling objects sometimes happens at closer perspectives, and often involves cutscenes.
The Legend of Zelda series
While previous games have featured overworlds, one of the earliest console games to feature an overworld is the Nintendo Entertainment System game The Legend of Zelda. Gameplay in Zelda's overworld was virtually identical to that of its nine underground dungeon levels, offering a top-down perspective and including access to caves, bridges, mazes, shops and waterfalls as well as lurking dangers that range from enemies to tumbling rocks. Much of the immediate gameplay takes place in the overworld, and the diversity of terrain (as well as the sheer size of the overworld itself) ensures that the player will spend as much time exploring and searching above ground as they will below (or in any of the areas listed above). The concept of an overworld also offered a nonlinear gameplay experience; some believed this would cause the player to become confused and not know where to go, a sentiment which has endured as overworlds have become larger and more complex.
The Zelda series is well known for these large overworld areas, such as Hyrule Field. Many enemies inhabit the various overworlds. The player can see most of these without any special tools, and most are easily defeated or avoided.
There are special items available in most of the overworld areas in the series, but these are often non-essential to completing the overall objective; the main purpose served by an overworld is to connect more important places.
Although large-scale overworlds were popularized by The Legend of Zelda in 1986, the genre of platform games did not have overworlds (in the main sense) until 3D platformers appeared in the mid-1990s. The concept of an overworld in platform gaming prior to that time was limited to a "level select" style, which first was first featured in the multi-genre arcade title Dragon Buster, and popularized by other games such as Bionic Commando and Super Mario Bros. 3.
In Spyro the first 3 games had a place called a "home world" that was like an over world. It contained portals to other levels of the game.
Previous titles like Super Mario Bros. and Castlevania revolved around the player completing levels in a linear order, with no option to return to completed levels. It is likely that the overworlds developed for 3D games, such as some of those listed above, evolved from the level-select type overworlds featured in prior 2D platform games, such as those seen in Super Mario Bros. 3 and Donkey Kong Country. Beginning with Super Mario Bros. 3, every Mario platformer has featured either a level-select type overworld (e.g. Super Mario World and New Super Mario Bros.) or a hub-type overworld (e.g. Peach's Castle in Super Mario 64 and the Comet Observatory in Super Mario Galaxy) - a central, usually enemy-free area - that connects to levels and other important places. As the genre evolved and became more popular, the overworld concept expanded into other platformers - from Kirby's Adventure to the Donkey Kong series - becoming a staple of the genre that endures as a prominent feature.
The town level in the roguelike game Angband
A home level is an area found within a roguelike video game. It is usually a haven for the hero characters, where enemy hostility is minimal. In most cases, the home level features shops in which the player can purchase items, and is often the initial site of the story or game, although in some games it is a location discovered later. In some games, such as Destiny of an Emperor, as the story progresses, the location of the home level may change, or there may be other such places that serve a similar purpose. Larn, a 1980s roguelike game, was among the earliest to feature a home level.
Some games feature a home level that contains many different points of interest. The home level in Angband, for instance, consists of seven shops, the player's home (where characters may store unneeded items), and a staircase to the first dungeon level. Some variants of the home level add specialty shops, quest locations, or a wilderness through which additional towns can be discovered.