Originally posted by Wariat117:

1) install mod
2) set player limit to 10000
3) play

Originally posted by Bidniz:

there also needs to be an option to create a public server with no password.

1) install mod
2) remove password
3) play

This. Just be aware that the game is made with the intention of small group co-op in mind, so getting a large group of players on one server can cause various issues.

Also if you open your server to the public there are no protections against griefers.