Core Keeper

Co-op mining and base-building servers.

Small shared worlds where progress accumulates for everyone. What makes a server worth joining is who is on it and how far into the tech tree they already are.

Default port: 27015
Steam: 1621690

This month Trending Most players All time Newest Open source only

Votes reset on the 1st — a server that starts today can still reach the top.

Nothing listed here yet

Be the first server in this section — an empty category is the easiest place on the site to reach number one.

Add your server

Some cookies are needed for the site to work at all. The rest are your call, and nothing in those categories loads until you say so. You can change this at any time from the button in the corner. What each cookie does.

Necessary Always on

What the site needs to work at all - staying signed in, keeping a form attached to you, and stopping the same browser voting twice. These cannot be turned off, and none of them follow you anywhere else.

Cookie	Purpose	Lifetime
xtremetop300-session xtremetop300	Keeps you signed in and keeps a form you are filling in attached to you. Encrypted.	120 minutes
XSRF-TOKEN xtremetop300	Proves a form was submitted from this site and not from somewhere pretending to be you.	Session
xt_consent xtremetop300	Remembers the answer you gave on this panel, so you are not asked again.	1 year
xt_device xtremetop300	A random token, tied to nothing else, so the same browser cannot vote twice for one server in a day. It contains no account, name or address.	400 days
remember_web_* xtremetop300	Set only if you tick "remember me" when signing in.	5 years

Analytics

Measures how the site is used so it can be improved. Nothing in this category is loaded until you allow it.

Cookie	Purpose	Lifetime
_ga Google Analytics	Tells one visitor apart from another.	2 years
_ga_* Google Analytics	Keeps the state of a single visit and when it started.	2 years