Like all the games in the Animal Crossing series, Wild World is an open-ended game in which the player assumes the role of a human who has moved into a village populated with anthropomorphic animals. During their time spent in the village, the player is able to perform a number of various activities, such as collecting items, fish and insects, or socializing with the village's residents.[6] The game is synchronized with the Nintendo DS clock and calendar, allowing the game to be played in real-time. For example, both daytime and night will occur in the village depending on the current hour, and snow will fall during the cold months. Different events occur at particular times of the year, such as holidays and the variation of collectible fauna depending on the month or season.
Wild World features a high level of customization. The player character's appearance can be modified to the player's preference: it can be dressed from a large selection of available clothes and accessories, or players can design new clothing patterns from scratch with help from the village tailor, Able Sisters. The environment itself can be modified: trees can be grown or chopped down in any part of the village, and the players share a house that can be furnished with collected furniture and items. Wild World adds the ability to draw constellations that are visible in the night sky.