This guide covers when multiplayer unlocks, how to add and invite friends, what you keep when you join someone else's world, and what you can do together.

How Co-op Works

Aniimo is fully playable solo, so co-op is optional.

Co-op works by joining another player's game. One player hosts, and the other players join the host's world. Every player has their own separate world.

How to Unlock Multiplayer

Co-op unlocks after you defeat Alpha Turbo in the main story and pass the assessment that follows. Passing it promotes you to I Student.

The I Student - Assessment Passed screen

Once you reach I Student, Friends in the Function Menu becomes available.

The Function Menu with Friends highlighted

Servers and Platforms

You can only play together if both accounts are on the same server. Co-op between different servers is not supported.

You pick your server on the Select Server screen when you log in. The options are Aniimo-Europe, Aniimo-Americas, and Aniimo-Apac.

The Select Server screen listing Aniimo-Europe, Aniimo-Americas, and Aniimo-Apac

Game progress is shared across platforms on the same server. Data on different servers is independent, so pick the same server as the friends you want to play with.

At the time of writing, there is no Nintendo Switch version of Aniimo.

How to Add and Invite Friends

  1. Open Friends from the Function Menu

    Open the in-game menu and select Friends.

  2. Search for the player and send a friend request

    Search for the other player by nickname or UID, then send them a friend request.

    The Friend List search with a player's name entered and the matching result below it
  3. Invite your friend with Come to Me

    Once they accept, select the icon on the far right of your friend's row in the Friend List. This is Come to Me, which invites your friend over to your world.

    A friend's row in the Friend List with the Come to Me icon on the far right highlighted

You can also send a Party invite from the Squad tab. Open the Friends menu, select Squad, select Team Up, and choose a player from your Friends list.

The Squad tab showing Not in a Party with a Team Up button, and the Invites list of friends on the right

In Astra or at an Outpost in Idyll, you can also send a friend request straight from a nearby player's profile.

How Many Players Can Join

A party holds up to 4 players, including the host. The host can invite up to 3 other players.

Companion Mode and Team Up

FeatureDetails
Companion ModeUsed to explore the open world together.
Team UpUsed for Sanctums and boss fights. The player who starts the Team Up becomes the Team Leader and chooses which co-op activity the group takes on.
A player's profile with the Companion Mode button highlighted

Joining another player's world lets you look for Aniimo that appear in that world's weather. For example, if a friend has Thunderstorm weather in Beast Fang Ridge, joining them gives you a chance at Thunderstorm Form Scorchhowl without waiting for the weather to change in your own world.

What Guests Keep and What Stays With the Host

These rules are based on reports we have received. We have not yet confirmed them ourselves while playing as a guest.

ProgressDetails
Caught Aniimo and itemsThe guest keeps them. Personal gains from the session go back with you.
Quests and world progressSaved only in the host's world. This includes completed quests, activated points or Bloom nodes, and exploration progress.
Teleport pointsPoints you unlock in someone else's world do not stay unlocked in your own world. You have to unlock them again there.

Main story quests are single-player only and cannot be completed in co-op.

What You Can Do in Co-op

ActivityDetails
Explore and fightExplore Idyll, catch Aniimo, and fight bosses and Alpha Aniimo together.
SanctumsSolve Sanctums with a friend.
Visit a HomelandVisit a friend's Homeland with the Visit Home button on their profile.
A friend's profile with the Visit Home button highlighted

While visiting, you can till soil on your friend's Farmland and receive crop materials directly from the soil you tilled.

The Till Soil prompt on Farmland in another player's Home

You can also pet the egg in your friend's Hatchinator to reduce its hatch time.

The Petting prompt at a Hatchinator in another player's Home

Public Areas Where You Meet Other Players

Other players do not appear while you explore the open world. To play together, you have to invite them or join their world.

Astra, Outposts, campfires, and RV Parks are shared public spaces. Other players are visible there even without an invite.

Other players inside a café in Astra

In these spaces, players can duel, trade, chat, and hatch eggs. Approach another player to open their profile, which has options to exchange Aniimo, team up, chat, or use Companion Mode.

Trading Aniimo with another player still requires Good Friend Affinity with them, as covered below.

Friend Affinity and Trading

Affinity with a friend goes up through daily interactions, chatting, gestures, and visiting each other's homes.

Sending or receiving a gift also raises Affinity with that player. In our example, Affinity went up by 10.

A chat with a friend and the message that Affinity with them increased by 10

There are 6 Affinity levels. From lowest to highest, they are New Friend, Good Friend, Close Friend, Trusted Friend, Best Friend, and Soulmate. To check your level with a friend, select them in your Friend List and choose Friends Tree.

The Friends Tree showing the New Friend, Good Friend, and Close Friend levels

Trading Aniimo unlocks at Good Friend, and higher levels widen the range of Aniimo you can trade:

Affinity levelAniimo you can trade
Good FriendBasic Form Aniimo with a max Potential of 8 only
Close FriendA wider range than Good Friend (the details are not confirmed yet)
Trusted FriendAlso area and weather variants, with a max Potential of 9
Best FriendAlso area and weather variants, with a max Potential of 10
  1. Select a nearby friend

    Select a nearby friend from your Friend List.

  2. Select Aniimo Exchange

    Choose Aniimo Exchange on your friend's profile.

  3. Choose an Aniimo and confirm

    Choose the Aniimo to trade and select Confirm.

    The Aniimo Selection trade screen with both Aniimo side by side and the Confirm button

For trade costs and daily limits, see our guide on how to trade with friends.

Operation: Egg Heist

Operation: Egg Heist is a real-time PvPvE mode set on the Lost Isles. In a run, you reach the Lost Sanctum, dig an egg out of a nest, and carry it back to the Egg Boat to extract before the 30-minute timer ends.

It unlocks when you pass Dr. Lewis's assessment for the III Wayfarer promotion, which requires character level 50.

ModeDetails
Team ModeA single team of 1 to 3 players with no rival teams, so you can also play it solo. The difficulties are Normal, Hard, and Nightmare.
Operation: Egg Heist (six teams)Adds rival teams. It unlocks once your Egg Heist rank is high enough.
The Operation: Egg Heist Team Mode screen showing 1-3 players, Single Team, and Entry Rank: No Requirement

If you faint during a run, you lose everything in your backpack along with all of your equipped gear.

Egg Heist awards Eggshell Coins, which you spend at the Egg Heist Shop.

For rewards and tips for a run, see our Operation: Egg Heist guide.

How to Find, Unlock, and Clear a Sanctum · How to Beat Alpha Turbo · How to Change the Weather