Another option is to fight Master Coeurls in the Omega Ruins. They drop Lv. 1 spheres as a common drop, so that’s one other way to farm them. You can also obtain Lv. 1 Key Spheres from chests on the Mi’ihen Highroad, Moonflow, Lake Macalania, and on Mt. Gagazet. But those are just one-time chests so they’re not repeatable. The Chocobo Eater story boss also drops some, and that’s also likely the earliest time you can get any, but that’s also a one-time fight.
Lv. 1 Key Sphere Uses
Lv. 1 Key Spheres are used to open level one locks on the Sphere Grid, which are used to separate each character’s paths & block off certain abilities and nodes. While the game gives you a handful of these Lv. 1 Key Spheres via natural story progression, you may need a few more to open up the grid completely for everybody on it. There are 10 Level 1 locks on the Sphere Grid in total. But alongside opening up your Sphere Grid, these Key Spheres can also be used in many of Rikku’s mix recipes – some of which can be pretty powerful. Super Mighty G (Light Curtain + Lv. 1 Key Sphere): Applies Shell, Protect, Haste, and Regen to the whole party. Quartet of 9 (Door to Tomorrow + Lv. 1 Key Sphere): One party member’s attacks deal 9999 damage until the end of battle. Final Elixir (Hi-Potion + Lv. 1 Key Sphere): Restores the party’s HP and MP to full, as well as revives KO’d members with max HP.
Are Lv. 1 Key Spheres Worth Farming?
Sure. Even after you’ve unlocked every first-level lock on the Sphere Grid, you can still use these Key Spheres as easy-to-obtain ingredients in some pretty powerful (and admittedly broken) mixes with Rikku. Having access to Quartet of Nine as soon as you get to Mt. Gagazet (where you can farm both items needed through bribing) is pretty amazing. It’s always handy to have at least a few Lv. 1 Key Spheres in your inventory for this purpose. And really, it’s not like they’re too hard to get!
