Age One Town Breaches

[geckosquid]

Opening a gate or jumping off the walls serves RP better and is ten times more epic, but as long as the damage is very minimal or you replace the blocks right afterwards, it's fine.
Building something in enemy territory is technically allowed at this point as long as it doesn't interfere with enemy structures since towns don't actually exist. I encourage you to mine their resources, too; that is an excellent, non-PVP strategy to disable the enemy.