How the island host system works
One player hosts an island from their own save file. Other players are guests who can visit, farm, fish, and complete requests together. The host picks the access mode in the in-game menu: Anyone Can Join, Request to Join, or Password Required. The Password mode is the only way to invite friends on Nintendo Switch 2, because the eShop overlay does not support friend-list joining.
What you can do in co-op
Guests can farm, fish, explore, complete profession quests, take photos, and finish bulletin-board requests on the host's island. Some quests depend on the island they originate from, so guests may need to return home to finish a specific task. Island progress is not shared — each player still has their own homestead, money, and inventory.
Cross-platform status
Cross-platform multiplayer is not supported at the 1.0 launch. The developer has confirmed they are exploring the possibility and will share concrete updates when available. For now, Steam players can only host Steam players, Xbox hosts Xbox, and so on. A Switch 2 / PC crossover would unlock the biggest audience but requires Nintendo approval.
Sharing resources and permissions
The host can customise per-resource permissions: crops, livestock, fishing spots, crafting stations, and other island resources. New players don't have to grind from scratch — a host can share storage so a friend can grab iron ore for a smelting quest. Permissions can be changed any time from the in-game menu.
The new 1.0 content
Version 1.0 also adds the Autumn Pumpkin Festival, three new 3-heart romance stories, new dating activities (hot springs afternoon tea, kite flying on the beach, arcade tokens at Lauren's shop), and 20+ community-winning blueprints from the Blueprint Contest. The Multiplayer Shop lets you spend earned Multiplayer Coins on furniture and decor.