In this section, players can practice all stages (including bosses, feather, meteor, supernova, chicken wall, etc.) with different degrees of difficulty (from 0 to 100%).
These levels don’t add any score to the player’s overall score.
The equipment that can be used in these levels doesn’t cause the loss of the purchased equipment (including weapons, satellites, number of lives, etc.)
With the help of these levels, you can try different tactics and play levels that the player hasn’t faced before.