Factions.net is a free-to-play Minecraft server based on the iconic 'factions' game mode.

You can learn a bit about how to play Factions with this excellent YouTube video by KevShamGaming.

In this game mode, players can band together to form 'factions' which are groups with a shared interest in building bases, claiming land, gathering resources, and attacking rival factions to obtain items and land. Pick your friends carefully. Having more friends in your faction allows you to expand larger and claim more land, but also opens you up to increased risks.

More info coming soon.