# Game Overview
## Intro
Crypto Tower Defense (TD) is a strategy game where the goal is to defend a player territory by stopping enemies from reaching the exits by placing defensive structures that serve to automatically attack and destroy the enemies. Strategic choice and positioning of defensive towers before the game starts is an essential strategy.
## Elements
The basic elements of the game are:
* The base that must be defended by the player.
* Waves of multiple incoming enemies that must be defended against.
* The [placement](/crypto-td/tower-placement.md) of Towers used to attack the enemies.
* The ability to [upgrade](/crypto-td/upgrades.md) the Towers to become stronger and faster.
* A token with which to purchase Towers, upgrades and playing credits. This token is earned when you defeat an entire wave.
## Combat Tower stats
The rarity of towers can be different, the higher the rarity, the stronger these stats will be:
* Power
* Rate of Fire
* Range
Along with those stats, tower projectile can also have other static stats:
*  - Follows target
*  - Does Chain damage
*  - Slows enemies
*  - Does Splash damage
* 
- Does damage over time
## Aura Tower Stats
The rarity of towers can be different, the higher the rarity, the stronger these stats will be:
* Effect
* Range
In Aura towers, the effect represents the corresponding percentage added to the towers in range.
  
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