- When it was first introduced in the Celestial Update, changing characters using a Moon Rock Idol reset the player's Map, Day count and Crafting recipes. This is no longer the case as of update 288118.
- The Idol glows when it is in proximity to the Celestial Portal.
- An Idol is defined as an image or object that is used to address deities or spirits with devotion.
- It gives off a small amount of light at night, but is not an appropriate light source to ward off Charlie.
- If Woodie offers a Moon Rock Idol to the Portal, Lucy the Axe will turn into a regular Axe when returning as a different character.
- When the Moon Rock Idol is offered to the Celestial Portal, the Character will perform an animation similar to the one used for The Lazy Deserter.
- The unique Character quotes when offering a Moon Rock Idol seem to indicate that using the Celestial Portal is similar to the classic description of death, in which one is said to see a bright light.