# Level System

Each bird can be leveled-up. At the moment there are 150 levels. After halving, the selling price of the eggs decreases. Increasing the levels of birds also increases the intensity of egg production, so the player can get back previous earning values.

The player can instantly upgrade the bird to the highest level, or do it gradually after each halving. The player may abandon upgrading the level.

{% hint style="info" %}
After halving, the cost of the upgrade is cheaper. Thus, this system allows new players to catch up with more experienced ones.\
\
But it is worth noting that the cost of improvements will be cut only for the previous halving.
{% endhint %}

{% content-ref url="../game-economy/halving-system" %}
[halving-system](../game-economy/halving-system)
{% endcontent-ref %}

**An upgrade from level 1 to level 2 has a cost of 5 FBG. The price of each subsequent level is calculated by the formulas:**

<table><thead><tr><th width="211">Level</th><th>Formula</th></tr></thead><tbody><tr><td>Up to level 50</td><td>[cost of the previous level + 10% of the cost of the first improvement]</td></tr><tr><td>From level 50 to 100</td><td>[cost of the previous level + 15% of the cost of the first improvement]</td></tr><tr><td>From level 100 to 150</td><td>[cost of the previous level + 20% of the cost of the first improvement]</td></tr></tbody></table>
