> For the complete documentation index, see [llms.txt](https://world-war-4.gitbook.io/welcome-to-gitbook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://world-war-4.gitbook.io/welcome-to-gitbook/gameplay/how-to-play-and-earn-reward.md).

# How to play and earn reward

**1️⃣** **To start joining battle, players need to assemble an ARMY**

* 4 ARMY NFT of any kind can be used to form an ARMY
* Players can get ARMY NFT through opening Cartridge box or purchasing from other players on the Marketplace

{% hint style="success" %}
Soldier and SWAT NFT can be directly bought at some special sale
{% endhint %}

**2️⃣ Participate in Battle daily. Higher level battle field required more stats (Blood and Fight Power) from your army** 

* Casual Field gives you Sharpnel as rewards
* Fatal Field gives you $WWF Tokens as rewards

{% hint style="warning" %}
To be able to join Fatal Field, players' ARMY must be formed by 4 different types of ARMY NFT
{% endhint %}

**3️⃣** **Accumulate enough shrapnels to create a Cartridge. Use your Cartridge box for your best interest, players have three choices when opening Cartridge**

* Open Cartridge to get ARMY NFT
* Open Cartridge to get EQUIPMENT NFT
* Open Cartridge to get Medal

{% hint style="info" %}
Cartridge box can be traded easily as we created **WW4 Orcale System**. For more information, refer [WW4 Orcale System](/welcome-to-gitbook/usdww4-oracle-system/ww4-oracle-system.md)
{% endhint %}

**4️⃣ Upgrade your ARMY NFT and EQUIPMENT NFT to better your income**