A complete How to play guide

The How to play page has grown from a placeholder into a full guide. It covers:

• founding your first base and the recommended build order
• power, selling and repairing buildings
• training units and reading the army overview
• the market
• the world map, attacks, spy missions and support
• clans, wars and alliances
• the rankings

It comes with dozens of screenshots, and the building and unit tables show the live game stats, so they're always up to date when we change the balance.