Airdrops
Supply drops appear across the map from time to time — most often at points of interest such as castles, ruins, lookout towers or hilltops. Common drops carry a few items; the rarer treasure chests hide more and better loot. Drops disappear after a while, so do not linger. Remote rural areas receive more generous loot and a larger collection radius. An Observatory reveals airdrops beyond your sight.
Airdrops and raid boss treasure occasionally contain a Resource Pack. The workshop does not make it. When you open it, its contents (wood, stone and iron) are added to your stock.
Raid bosses
Mighty monsters periodically awaken in the world — the Forest Dragon, Mountain Golem, Swamp Hydra, Fallen Knight or Deep Kraken. Defeating one takes the combined effort of several players: a boss has an enormous health pool, grows fiercer through phases during the fight, and strikes back at its challengers. Rewards are split by damage share, the top three fighters earn a bonus, and players take turns drafting the rare items from its treasure. A boss that appears at a lake or pond waits on the shore, not in the middle of the water.
NPC garrisons
Wild regions are guarded by garrisons — from primitive tribes to the dreaded Dark Legion. The higher the region, the tougher the defense. Garrisons are not merely passive: now and then they invade a claimed region and cut its production until driven out, and their patrols occasionally venture as far as your buildings. Neglect your borders and you will lose them. You only see a garrison in the region you are standing in — an Observatory sees further.
Bosses and garrisons appear where people play: around players who have recently been out on the map or have buildings there. Where nobody has been for a while, you will not meet them.
Patrols
A garrison getting ready to expand now and then sends a patrol onto the map: a weaker squad that roams close to its camp for a few hours and then disappears. Beat a patrol in a quick skirmish to win a little loot and slow down the garrison's expansion.
You see a patrol on the map when it is within your hero's sight, when you stand in its garrison's region, when you own that region or have a building in it, and when it is within range of your Observatory, which also lists it among its detections. When a patrol sets out in a region where you have a building or which you own, or within range of your Observatory, you get a notification. You can attack it once you walk up to it.