A strong player cannot attack or spy on a much weaker active player. The attack is allowed if at least one of these rules applies:

• the defender has been inactive for more than 4 days
• the defender owns a Wonder of the World village or an artifact
• the target is an oasis or belongs to a system account
• the attacker has at most 400 inhabitants or at most 2 villages
• the defender has more than half the inhabitants of the attacker
• the defender has more than half the villages of the attacker
• a Wonder of the World has reached level 85

If you attack, raid or besiege a player who is in an alliance, you lose your own protection for 6 hours.

Reinforcements can always be sent.