> For the complete documentation index, see [llms.txt](https://cointofish.gitbook.io/cointofish-en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cointofish.gitbook.io/cointofish-en/information/fusion-system.md).

# Fusion System

It is possible that the information you are about to see below will undergo changes at launch. It is not something that will be available the first day after the launch of the game.

We know that in this kind of games getting a low rarity monster can be a bit frustrating... Therefore we are working on a system that will allow you to use your rarity 1 and 2 monsters to improve the rarity of your strongest monsters.

![Fusion example for Rare 1 + Rare 3 = Rare 4](/files/-MjjEyuvUnTJA5REaAYf)

In the example above we can see that a fish of rarity 1 and a fish of rarity 3 are combined to obtain a fish of **rarity 4**.

In addition, by merging we will obtain an additional advantage. The fish resulting from the fusions will have a **75%** chance of appearing with a random **skin color**.