# Concepts

**City**

Civitia's board is divided in 18 cities grouped in 6 sets.\
Each city has different properties: rent prices and pricing curves.\
Each set of cities has a seasonal city.

**Unit**

A unit is an instance of a city. They can be minted and burned indefinitely.\
A city's unit can only be minted when landing on its square but can be burned at any time.\
Holding a unit grants the owner a share of all payment rents being paid in that city.

**Playing and Paying Rents**

Playing Civitia requires the user to hold INIT.\
When visiting a city, users are required to pay rent in INIT to move according to its type of user. \
Once the user throws the dice and moves out from a city, the rent payment is subtracted in INIT.

**Minting and Burning units**

When landing on a city, the user is granted the ability to mint a unit with INIT.\
Units can be burned in exchange for INIT at any time, based on their current price.\
Minting and burning pricing follows a linear bonding curve.

**Seasons**

Seasons are weekly epochs for city residents to compete for additional rewards.\
These rewards include rent boosts in their city of residence, jackpot earnings and VIP distribution.

**Residences**

Players that want to participate in weekly seasons are required to mint a residence pass.\
When minting a residence pass, they can place their residence in any city they own.\
Based on their residence, players will get rent boosts and earn season jackpots, along with VIP.

**Seasonal cities**

A seasonal city is a city that is destroyed at the end of each season and reset for the next one.\
Units that are not burnt by their owners before the end of a season are destroyed.

**Rent distribution**

Each time a rent is paid it is divided amongst all the holders of the city. \
Distribution of rents depends on the units of each city every user and their boosts.\
There are two types of rent boosts: Residence and sets.

**Residence contributions**

Players with an active residence automatically contribute to their city of residence.\
For each 1 INIT spent in minting units and paying rent, their city of residence gets 1 Contribution.

**Tax Points and sabotaging**

Apart from contributing to their residence, players with an active residence also earn Tax Points the same way they Contribute. \
Tax Points can be used to sabotage other cities and decrease their score when landing on their square.

**City score**

Cities score defines its radiation using *Score* *= Total contributions - Total sabotages*

**City radiation**\
\
Based on its score, a city has more or less Radiation, and therefore lower or higher rent multiplier.\
All cities are reset to 5/5 radiation at the beginning of each season.