Characters, Rarity & Progression
In Kaos City, your characters are everything. They are your main asset, your way to earn KAO, and the core of your long-term strategy.
Each character has three key traits:
A rarity tier (1 to 6)
Stamina (how often they can fight)
Health (how much damage they can take)
The better you manage these three, the stronger your account becomes over time.
Rarity: how powerful your character is
When you open an egg, the game rolls RNG (randomness) to decide the rarity of your new character.
There are 6 rarity tiers:
1
Common
50.0%
1.0×
2
Uncommon
25.0%
1.35×
3
Rare
15.0%
1.75×
4
Epic
7.0%
2.2×
5
Legendary
2.5%
2.8×
6
Mythic
0.5%
3.6×
*Multipliers are applied to the base earning model of the game. Higher rarity = higher potential KAO per successful battle.
You can get lucky and roll a high rarity from an egg, or you can build your way up using the breeding system
Stamina: how often your character can fight
Stamina controls how many battles a character can play in a row.
Every character has a maximum of 12 stamina.
Each battle consumes 3 stamina.
Stamina slowly regenerates over time (every hour) until it reaches the cap again.
Simple rule of thumb:
Full stamina (12) → up to 4 battles in a row.
When stamina hits 0 → that character needs to rest and recharge before fighting again.
This means you don’t have to be online 24/7. You can come back every few hours, spend stamina on a few battles, and let it regenerate while you’re away.
Health & healing: taking care of your team
Battles in Kaos City have consequences:
When your character wins, it does not lose health.
When your character loses, it loses 10 health points.
Each rarity tier has its own health pool. If you lose several fights in a row, your character may end up at low HP.
To keep a character in shape, you can:
Heal them by paying a cost in KAO.
All KAO spent on healing is 100% burned (permanently removed from circulation).
Healing is part of the strategy: you decide when it’s worth investing more KAO into a character versus saving for eggs or breeding.
Breeding: turning three into one stronger
Breeding is how long-term players climb the rarity ladder.
The rules are simple:
You need 3 characters of the same rarity (for example, three R1 or three R2).
You pay a breeding fee in KAO, based on the rarity you are upgrading from.
Those 3 characters are consumed, and you receive 1 new character of the next rarity tier, 100% guaranteed.
Breeding fees (paid in KAO):
1
2
2.0
2
3
3.5
3
4
5.5
4
5
8.0
5
6
12.0
6
–
Not breedable
Important:
All breeding fees are burned.
You cannot breed above rarity 6.
Breeding lets you compress many low-rarity characters into fewer, stronger, higher-rarity units with better earning potential.
How progression feels over time
A typical progression path in Kaos City might look like this:
You start with one or two eggs and open them.
You use those characters to fight, earn KAO and learn the enemies.
As you collect more characters, you:
Build a roster of up to 4 fighters,
Rotate them as stamina regenerates,
Keep them healthy with occasional healing.
When you have enough characters of the same rarity, you start breeding to move into higher tiers (R2, R3, R4…).
Over time, your account shifts from many low-rarity characters to a smaller squad of high-rarity units with better multipliers.
Your choices — which enemies you fight, how you manage stamina and health, when you breed, and when you cash out — define your personal strategy and risk level.
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