Gameplay
The gameplay revolves around raising a single Digimon from its Digiegg form, hatching into a Fresh, up through In-Training, Rookie, Champion, and with work, Ultimate. A Digimon partner will die with age, and return to an egg eventually, so the player has to raise it again. To raise a Digimon partner, the player must train it, feed it, let it rest and take it to a bathroom.
The other main part of gameplay is battle. The player's partner Digimon fight the Digimon that have become aggressive due to a crisis on File Island. Partner Digimon begin the game with a few basic skills, but acquire more as they progress in levels through the game.
The more Digimon who you gain in your city will make training and various other aspects of the game much easier. Many will open shops and even sell items, some which will open mini-games you can play to gain rewards and items.
Read more about this topic: Digimon World