# Atmosphere Open World
**GAME x SNS**
Your game account uses your SNS account.
A game that stores and references game data on SNS platforms like Bluesky.
**Ai x Universe**
The theme of the game is the universe.
Ai refers to the elemental attributes that exist in this world.
A combat system built around elemental reactions.
**Elements**
Elements are derived from real particle names, such as atoms and neutrons.
Each character holds one element.
Landing an elemental attack applies the element to an enemy for a limited time. Strike
again with another element during that window for massive damage.
**Growth**
Leveling up primarily means ascending limits.
Characters, items, and cards each have different roles but share common stats.
For example, items relate to experience points, and cards relate to skills a character
can use.
Each has a unique value, a global value, and a rarity value.
Obtaining duplicates increases the global value over time.
**Characters**
Character acquisition is seasonal.
When a new season begins, new characters become available.
The season you join determines your starting character.
Each character has four elements: Attribute (Ai), Skill (Yui), Global Value, and
Unique Value.
Global Value is called CP, which is distributed across base stats.
Skills are called Yui in this world — equipping a card unlocks them.
**Card**
You can draw cards in the iOS app Aicard.
Owning a card lets you apply it in the game.
**Story**
The story is a quest for the smallest matter.
