> ## Documentation Index
> Fetch the complete documentation index at: https://bubblewars.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Portals

<h3>Portals serve as players' entry and exit points into the game world.</h3>
They are used to deposit and withdraw ETH, which is essential for participating in
the game.

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<img src="https://mintcdn.com/bubblewars/ynatmMGxxT1iGed-/images/portal.jpg?fit=max&auto=format&n=ynatmMGxxT1iGed-&q=85&s=d21ec8ff369aa9ced57e2ba03c850a5e" width="1320" height="1264" data-path="images/portal.jpg" />

Portals **absorb any bubbles or mass** that come into contact with them, allowing
players to secure their gains or losses by withdrawing.