Nothing to memorize, no timers, no reason to play every day. You travel, and that is what moves things along, so the pace is yours.
Heal a creature to full and then you can bond with it. Call on a bonded creature and its spirit answers where you are, healing beside you or drawing danger away. Hold your note and healing reaches everything around you; hold it alongside a friend and your notes gather into a chord.
Every time you calm a creature, your party's harmony charges. Hold the harmony button together and you will cast a healing wave you couldn't reach alone. The more of you join in, the better it heals, but the more harmony it draws. The charge keeps building while you wait for the others, so no one is rushed.
Your spirit instruments can only hold so many bonds, so the party's elements are whatever you have chosen between yourselves. What you carry decides what you can handle—only water can quench a fire. Match a creature's element while it is stilled and its heart opens, stopping it in its tracks.
A child, a parent, a grandparent, someone who has never held a controller — everyone can join in and play right away. There are no combos to memorize, and nothing asks for split-second precision; all the while, a player looking for depth will find plenty of it. Friends drop in and out whenever, and if you arrive mid-scene, you'll watch until there's room: then you're in.
Plants bear fruit and bonds deepen as you travel. Play for an hour or vanish for a month. Nothing withers while you are gone. Stand still a while and the day still turns, the clouds still roll through, and the sun still sets.