> For the complete documentation index, see [llms.txt](https://token-tactics.gitbook.io/guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://token-tactics.gitbook.io/guide/en/introduction-and-game-basics.md).

# Introduction and game basics

This guide will help you understand the basics of the game, learn how to earn and withdraw real money, and also find solutions to the most common problems.

#### What is Token Tactics? <a href="#what-is-token-tactics" id="what-is-token-tactics"></a>

It is a crypto-portfolio simulator in a game format. You use virtual dollars (vUSD) to buy and sell cryptocurrencies whose prices correspond to real ones. This allows you to learn investing without the risk of losing real money, but with the possibility of earning.

#### Key concepts: what are vUSD and USDT? <a href="#key-concepts-what-are-vusd-and-usdt" id="key-concepts-what-are-vusd-and-usdt"></a>

* **vUSD (virtual dollar)** — is the in-game currency. You receive it for free when registering via a referral link or you can purchase more. vUSD is used to buy crypto assets in the game.
* **USDT** — is a real stablecoin that you receive after the weekly exchange (airdrop) of your earned vUSD. USDT can be withdrawn to your external crypto wallet on the TON network.