Approach the NPC you want to invite and open the radial interaction menu. If an aquarium outing option appears, select it to send the invitation. The draft says the option may require a sufficiently high friendship level, but it gives no specific threshold.
If the invitation option is missing
Raise your friendship with the NPC by completing their daily requests or giving them preferred items, then check the radial menu again. The draft does not specify how much friendship is required or confirm that either action guarantees the option will unlock.
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Emily Johnson
Emily writes practical mobile strategy guides with a focus on resource planning, base progression, and the early decisions that shape a long-term account.
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Player Comments
28 players commented on this guide.
Nice guide. I am checking the other Petit Planet articles next.
This helped me understand strategy much better.
I tried this today and it worked better than my old setup.
The explanation is clear, especially for beginners.