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description: Continuing the adventure.
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# Metabases

In addition to choosing a metaplanet, you must select a metabase. These are the bases where you can place your Metaminers to protect them from the elements. To select metabases, it is important to know:&#x20;

* The size of the bases will decide how many mining slots you will have.
* You will be able to place only five (5) mining bases per planet.

The Metabases at the moment of mining will obtain a rarity level that will define their life and the amount of Metaminers that you will be able to place:

|   Rarity  | Drop probability | Slots | Life |
| :-------: | :--------------: | :---: | ---- |
|   Common  |        46%       |   1   | 60   |
|  Uncommon |        32%       |   2   | 90   |
|    Rare   |        16%       |   3   | 120  |
|    Epic   |        5%        |   4   | 150  |
| Legendary |        1%        |   5   | 210  |

<mark style="color:red;">(\*) All these percentages may vary to ensure the stability of the token</mark>
