# Welcome to Cash City

Cash City is a Solana-based Trading Firm simulator where you run your own Firms, hire Interns, and compete for a share of daily $CASH emissions. Every decision — which Interns to seat, when to upgrade, how aggressively to hire — affects your cut of the pie.

<figure><img src="/files/9Ph0qarZQ8zTZMHYZK9Y" alt=""><figcaption></figcaption></figure>

This documentation covers everything you need to know: how the game works, the math behind the economy, and how to make the most of your time on the trading floor.

{% hint style="info" %}
Cash City is invite-only. You need an access code to play. Every player in the game can generate invite codes — find one on [X (Twitter)](https://x.com/cashcitydotfun) or ask someone already inside.
{% endhint %}

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### Quick Links

| Section                                               | What You'll Learn                                  |
| ----------------------------------------------------- | -------------------------------------------------- |
| [What is Cash City?](/game-overview/game-overview.md) | The core loop and how the game works               |
| [Firms](/game-overview/firms.md)                      | Buying, upgrading, and managing your Firms         |
| [Interns](/game-overview/interns.md)                  | Rarity tiers, Efficiency, and gacha pack mechanics |
| [$CASH Token](/tokenomics/tokenomics.md)              | The in-game token and how it works                 |
| [The Earning Formula](/economy/economy.md)            | How your share of emissions is calculated          |
| [Referral Program](/economy/referrals.md)             | Invite codes and multi-tier Referral rewards       |

***

### Built by Longwood Labs

Cash City is developed by [Longwood Labs](https://longwoodlabs.com), the team behind DeFi Dungeons and The Heist.

**Links**\
[Website](https://cashcity.fun) · [X (Twitter)](https://x.com/cashcitydotfun) ·&#x20;


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