Most events last 6h (which immediately turns into 5h on the UI with 59m not showing), and others are shorter, longer or even seasonal. A new event pops up every 6 hours and an event-timer is recorded inside the world save file. If you turn your system clock to the future and pop-up an event and come back, you will not see next another event until that time has actually come. There are Steam achievements that require you to complete 50 and then 200 events. By repeatedly deleting an old world, creating a new one, reaching the fourth island and completing the event that pops up, you can speed this up.
Event's spawn levels are based on the character you choose before either entering an island or opening the world map. Most events will be 2 levels above the said character level but all the important drops (from creatures and chests) will be the same regardless of the event's level. In case you character level is lower than the island, the event will spawn based on the island and not your character level. That means you can spawn an event with a lower level character to have weaker foes and actually complete it with a geared, higher level one. The only way to be sure all events will spawn on low levels, is by keeping a world with only 4 islands and always check that world with a low level character. Keep in mind that some events will be influenced by the character level and some events will not spawn until you reach certain areas or islands with specific biomes.
Certain events may spawn in creatures that will be the same as those on the island. In such case, the islands natural inhabitants will not count towards the event counter, despite being technically the same.
At any level, invasion events' creatures can drop rare items like trophies, recipes and pets but, this chance will be better on higher levels. All invasion events' creatures over level 25 also have a small chance to drop energy crystals. This too will improve on higher levels and will be considerably better during the Araktula Invasion event.
|Araktula Invasion||Araktulas have infested this island. Fight them back!||Makes it possible to farm Energy Crystals (even if mobs <Lv25). Droprate is ca. 5%. Mobs will continue to respawn as long as you stay on the island (even after the event has ended).|
|Assault of the Golems||Hordes of Golems have taken over the island. Chase them away.||Normal Drops|
|Blossom Madness||There is an alarming overgrowth of Blossoms around here recently. Time to weed them out.||Normal drops. Good way to get extra XP.|
|Grunt Army||A large army of organised Grunts has appeared. Drive them off the island.|
|Gang of Bones||Groups of Bones have taken over the island. Chase them away.|
|Monkey Business||This island is overrun by members of the Utan family. Better drive them away before they try anything funny...|
|Mummy Invasion||Hordes of Mummies have taken over the island. Chase them away!|
|Orc Brothers||Packs of Orc Brothers have taken over the island. Chase them away.|
|Parrots, Parrots Everywhere...||This island is overrun with parrots. Quickly, chase them away.||Emerald Parrot has a chance to drop Parrot pet.|
|Rattling Bones||Packs of the Fallen have taken over the island. Defy them all.||Normal drops. Good way to get extra XP.|
|Saurian Invasion||A nasty group of Saurians keep this Island under chaos. Show them who's the Boss.|
|Shell Troubles||A small army of Shell Turtles invaded the island. Defy them!||You can use the crafted spell Poison Rain to attack groups of the Shells at once.|
|Spore Outbreak||This island is infested with vile Spores. Time to clean up!||Spores have a chance to drop Mana Spore, Lava Spore or Poison Spore pet.|
|Hollow Prince||The Hollow Prince is running loose, trying to claim this island. Stop him!||
||Astral Heart, Refined Celestial Blocks, Refined Obsidian Blocks|
|Chest Hunt - Fresh Water Fountain||A Water Fountain has appeared on this island. Was that a sparkle in the water?||Find the fresh water fountain.||The fountain can be particularly hard to find during night. During the day, you can look for the water's reflection or the unusual shape of the fountain and see it from very far away. The chest contains an Energy Crystal and other items based on the event's level.|
|Chest Hunt - Spider Cave||Spiders dug themselves a cave on this island... Yuck.||Find the Spider Cave and claim their treasure!||The cave can be hard to find but it will always have its entrance on the surface. The chest contains an Energy Crystal and other items based on the event's level.|
|Chest Hunt - Turtle Hut||Turtles have constructed a strange hut on this island||Find the Turtle Hut and claim their treasure!||The hut is easy to spot due to its large Green Crystal Block roof. The chest contains 3 Energy Crystals and other drops based on the event's level.|
|Orc Fortress||Orcs have built a Fortress on this Island.||Find the Fortress and claim their treasure!||The fort itself is easy to find. If you having problem due to terrain or trees, try to find the waving flag on its top. The chest will contain 3 Energy Crystals and other drops based on the event's level.|
|Hollow Knight Tower||Hollow Knights have built a Tower on this Island.||Find the Tower and claim their treasure!||The tower can be easily found due to the Crest of the Hollow Knights atop of it, along with 2 Moonstone Blocks and its unusual design. The chest will contain 2 Energy Crystals and other drops based on the event's level.|
|Stray Chest||Odd... Somewhere on this island, a chest just popped up.||Find the chest and collect its treasure!||The chest will have a torch beside it, so it may be easier to find at night. It contains items based on the event's level.|
|Undead Graveyard||Undead creatures have build a graveyard on this Island.||Find the graveyard and claim their treasure!||The graveyard should be easy to spot even on large Islands. If you are having problems, try looking for the two waving flags above the tomb's entrance. The chest will contain 2 Energy Crystals and other end game items.|
|Intensive Care||Mummies on this island carry a secret for increasing the power of healing.||Craft an Increased Healing Flask using the Mummy's temporary special drops.||Each Mummy and Ancient Mummy will drop Mummy's Tear (an ingredient) and rarely the recipe for Increased Healing Flask. Only when (and if) you find that, you can craft the flask. There is no other reward other than the flask itself.|
|Nectar of the Earth||Maggots on this island hold a special power for breaking down matter.||Craft a Mining Damage Flask using the Worm's temporary special drops.||Each Venom Maggot will drop Worm Goo (an ingredient) and rarely the recipe for Mining Damage Flask. Only when (and if) you find that can you craft the flask. There is no other reward other than the flask itself.|
|Running Wild||The Fallen Squires are running wild on this island. Maybe you can participate?||Craft a Swiftness Potion II using the Fallen Squires temporary special drops.||Each Fallen Squire may drop an Ice Rose, Sea Sapphire Dust and/or the recipe for Swiftness Potion II. Only when (and if) you find that can you craft the flask. There is no other reward other than the flask itself.|
|Celebrate and dance with the Undead to chase away evil spirits!||The living dead have created a Portal. What lands may lie beyond?||There is a new, portal on an islands. Once you enter it, you are transported to the All Hallows' Land, an event island: "A spooky, yet festive island has appeared. Enjoy yourself and dance with the Undead before the Island fades."|
|A festive Portal appeared and it seems like there are people celebrating on the other side...||Find the festive portal and travel to a snowy wonderland!||There is a new, portal on an islands. Once you enter it, you are transported to the Winter Wonder Mountains, an event island: "Go and find some presents! Beware of their chilly protectors, though..."|
|The Emperor's Courier
|A special visitor from distant Islands has come to ask for your aid.||Find and speak to Chen in his small shack. He needs your help.||Chen stands next to a small box that can be mined. The box contains a Magical Dragon Statue which grants access to Peach Tree Fields, an otherwise unreachable island. It also activates the Spring Festival event.|
|Spring Festival 2017||Help the Emperor solve the troubles that plague his islands.||There are several quests to complete||Complete quests by helping Kong, A-Ming, Lao Li and Dao in Peach Tree Fields to gain access to Mountain Temple. There, you will help Shan, Hui and the Jade Emperor to lift the curse on this lands and be rewarded with tons of XP, Gold, recipes, energy crystals, a pet and the peaceful (and permanent) island Fields of Balance.|
|The Pillars and their Temple||An envoy of the Pillar was sighted on this Island. Will he grant you access to their sacred Kolemis Temple?||Find and speak to Metafis in his small shack. He needs your help.||Metafis stands inside a small house with a small box in front of him that can be mined. The box contains a Kolemis Tesseract which grants access to the Kolemis Temple, an otherwise unreachable island. It also activates the Kolemis Temple Trials event.|
|Kolemis Temple Trials||This island is but a fragment of a forgotten pre-Fracture empire, but it holds great historical significance as the proving ground of the empire's most cunning warriors: the Pillars. Will you pass their Trials?||Find and speak to Metafis in his small shack. He needs your help.||Speak to Soffis who is standing right next to a portal. He will tell you about the three temple trials to become a true Pillar of the Empire:
Once you have rung the bells in all the dungeons, Soffis will reward you with XP, 1x Energy Crystal and 6x Pink Portal Stones. He will also activate the gate next to him so you can place those six Portal Stones and open the portal to the Isle of Toblis (reward island).
|Egg Hunt||The island is covered with colourful eggs. But watch out, the Hollow Knights corrupted some of them.||Craft a Golden Egg||You will find Green, Yellow and Orange eggs lying around. The corrupted ones fight back. Kill and collect the eggs. Take them to a Drafting Table to craft a Golden Egg using 15 of each colour.|
Note that the event will not be marked as completed unless you actually craft the Golden Egg on the island where the event occurs!
|Asteroid Impact||A huge asteroid crashed on this island.||Mine 5 Asteroid Core Blocks found in and around the crater.||The Asteroid Core Blocks and the surrounding valuable blocks are the reward.|
|Eternal Darkness||Hollow Knights have engulfed this island in Eternal Darkness.||Find and destroy the Shadow Crystal.||The Shadow Crystal drops rare recipes and an Astral Heart when destroyed.|
|Mysterious Portal||Hollow Knights have created a portal. Discover the island that lies beyond!||Find, activate and cross the portal.||The portal leads to Morteheim Guildhall, an otherwise unreachable island.|
|All You Can Mine||A wave of the Fracture's aftershock is washing over this island, causing its coal occurrence to produce precious metals for the time being.||Mine 60 Coal with a chance of gaining precious metal.||Mining Coal on this island during the event also yield Gold Ore and Titanium Ore. Stock up!|
|Electro Thunder Storm||A raging Electro Thunder Storm ravages this island.||Find and destroy 3 Thunderstorm Crystals.||The storm Crystals each drop an Energy Crystal. The storm crystals are guarded by Jam-Utans. The crystals beam light into the sky, visible through the thunder storm.|
|Sand Storm||A roaring Sand Storm has appeared on this island.||Find and destroy 3 Sandstorm Crystals.||The Sandstorm Crystals each drop an Energy Crystal. The crystals are guarded by Pyr-Utans.The crystals beam light into the sky, visible through the sand storm.|
|Tropical Rain Storm||A loud rain storm prevails on this island.||Find and destroy 3 Rainstorm Crystals.||The storm Crystals each drop an Energy Crystal. The crystals are guarded by Thunder Gazers. The crystals beam light into the sky, visible through the rain storm.|
|Snow Storm||-||Find and destroy 3 Snow Storm Crystals.||The storm Crystals each drop an Energy Crystal. The storm crystals are guarded by Alp-Utans. The crystals beam light into the sky, visible through the snow storm.|
|It lurks in the deep...||A couple of monster dug themselves a pond on this island. Maybe you can conquer it for your own purposes?||Hidden inside the pond behind a wall of sand is a chest that contains an Energy Crystal.|
|Jade Stone Merchant||A mysterious merchant has appeared in this island.||Find Ye the Jade Stone Merchant's house, accept his quest, kill the Bamboo Araktula and destroy the spiderweb.||There is no reward for the quest itself but finishing it, unlocks the shop which has items from Spring Festival event for sale.|
Since update 1.3, all events levels will be random and based on character/island levels.
No events will spawn on "Hintertown"