MapleStory/Towns/Kritias

Kritias is an upside down tower. It is connected to Leafre in Sky Nest I. It contains 2 sets of maps and monsters. (Let's just call it Set A and Set B) However, the quests give much more EXP than any other quests in the game (except Zero's story quests) The monsters are used for daily quest purposes and maybe high-level training purposes. In addition, you can join in the bi-hourly Kritias invasion to fight against the forces of the commanders (Hilla, Arkarium, Magnus and Von Leon). The Kritias shop will also be opened.
 * Set A Maps
 * When you are doing the storyline quests, you will enter this set of maps and monsters, which cannot spawn elite monsters and the monsters give very less EXP. Monster level ranges from 160 to 180. You also cannot fight in the bi-hourly invasion and you cannot access the Kritias shop.
 * Set B Maps
 * You will enter this set of maps after you leave Kritias after clearing all storyline quests of Kritias and unlocked the Daily Quests. This set of maps contain monsters level 182 to 210, which gives normal EXP (but still worse than Armory and Knight C/D/E monsters but it has lesser HP as well).

Travelling
You can enter from Sky Nest I from Leafre, which brings you to Frozen Path 2. You can also enter Market in Kritias by using Veritas portal or the Pantheon portal to teleport to Kritias. Similarly, you can exit Kritias by using the Kerca Porta in Enheim, Academy of Magic to teleport to a town of your choice (like Veritas and Pantheon) or to walk to Frozen Path 2 and entering the left portal to exit to Sky Nest I. You can only use teleport rock in Kritias if you cleared all storyline quests and have access to Set B maps.

The Kritias shop
This shop can easily be classified as the best shop in the whole game that is permanent (other than the ridiculously high costs of items). The shop uses 2 type of coins, the Enheim coin (silver, derived from the name of the Academy of Magic) and the Kritias Coin (gold, derived from town name). The shop sells the following items (bolded items are highly sought after):
 * Cubic Blade (4 Kritias coins)
 * Chaos Cubic Blade (6 Kritias coins)
 * Unextinguishable flame (5 Kritias coins)
 * Super unextinguishable flame (10 Kritias coins)
 * 3 Traits potion, 15 trait EXP in total (1 Enheim coin)
 * Hilla/Arkarium/Von Leon/Magnus Transform potion (7 Enheim coins)
 * 1.5x EXP entropy (3 Enheim coins, EXP boost works only in Kritias, lasts for 1 hour)
 * AMP entroy (2 enheim coins, Anti-Magic-Points increased by 50% for 1 hour, bonus points are excluded from the 10,000 Anti-Magic daily looting limit.)
 * Hekathrone (100 Kritias coins)
 * Inverse Set
 * Inverse Kodex (100 Kritias coins, pocket item, Stats increase with item level, item level increases when fed with anti magic, decays daily)
 * Inverse Jewel Earrings (200 Kritias coins, earring, stats are the same as Meister Earrings with additional 100 HP and MP)
 * Inverse Sholderpad (200 Kritias coins, shoulderpad, 10 Weapon/Magic ATT, 10 All Stats, 180 Weapon/Magic DEF)
 * Wear all 3 items for 20% boss damage and 20 Weapon/Magic Attack boost.
 * Tyrant Gloves (400 Kritias coins)
 * Basic Damage Skin (15 enheim coins)
 * Digital Damage Skin (100 enheim coins)
 * Kritias Damage Skin (100 enheim coins)
 * Boss limit reset tickets (can be used once every 168 hours/7 full days)
 * Cygnus/Chaos Von Bon/Chaos Bloody Queen/Chaos Pierre (10 Enheim coins each)
 * Hard Magnus/Chaos Vellum (12 Enheim coins each)
 * Anti Magic Condenser (5,000 meso)

Anti magic and Anti magic stones
To acquire anti magic and anti magic stones, you have to participate in activities in Kritias. Note that you must have an Anti Magic Condenser to collect anti magic (except for invasion rewards).

Daily Quests
Every day, you can do daily quests (which must be completed in a certain order) There are 5 daily quests. Note that you have to do the quests outside invasion times as invasion monsters will not count in any of the quests at all.

1st/2nd/3rd Daily Quest
These involves either level 182 to 190 frozen series of monsters or Level 200 low level wizards. They reward 840,000 EXP and 600 anti magic each (is given as an Use item, so if you have AMP entropy active, it will give 900 instead. Does not count towards the daily limit) Possible Daily Quests:
 * Kill 250 or 300 of a specific monster in the frozen series
 * Kill 250 or 300 of a specific monster in the frozen series and collect 150 or 200 (respectively) of that monster's common etc drop.
 * Kill 200 Low level wizards
 * Kill 150 monsters each of 2 specific monsters in the frozen series.
 * Kill any monsters in the frozen series and collect 100 frozen energy (quest item).

4th Daily Quest
These involves either the burning series of monsters (Level 192 to 200) or low level wizards (Level 200) and mid-level wizards (Level 205) They reward 1,120,000 EXP and 1,200 anti magic (given as an Use item, so if you use it while AMP entropy is active, you get 1,800 instead. Does not count towards daily limit) Possible quests:
 * Kill 450 of a specific monster in the burning series
 * Kill 250 of 2 specific monsters each in the burning series
 * Kill 100 of each monsters in the burning series
 * Kill 100 of each monsters in the burning series and collect 300 burning energy (quest item)
 * Kill 400 mid level wizards
 * Kill 200 mid level wizards and 200 low level wizards
 * Kill 200 mid level wizards and 200 low level wizards and collect 100 mid level wizard's cloth and 100 low level wizard's cloth.

5th Daily Quest
This quest is the hardest of all if you are low levelled and unfunded. They involve either the seeping series of monsters (Level 202 to 210), high level wizards (Level 210) or possibly any wizards below it, or all monsters in Kritias (except invasion monsters) They reward 2,240,000 EXP and 1 Anti-magic Stone. Possible quests:
 * Kill 600 of a specific monster in the seeping series
 * Kill 300 of 2 specific monsters each in the seeping series
 * Kill 200 of 3 specific monsters each in the seeping series
 * Kill 600 high level wizards
 * Kill 600 high level wizards and collect 300 of its cloth.
 * Kill any monsters in Kritias (excluding invasion monsters and wizards) and collect 200 frozen energy from the frozen series, 200 burning energy from the burning series and 200 seeping energy from the seeping series.
 * Kill 200 of low level wizards, mid level wizards and high level wizards each
 * Kill 200 of low level wizards, mid level wizards and high level wizards each and collect 100 of the respective cloths each.

Kritias invasion
This is the bi-hourly invasion. Based on server time, every 2 hours, with the first invasion starting at 8.01am and the last invasion starting at 10.01pm, 2 of the commanders will invade Kritias. Time limit is 35 minutes, including 5 minute preparation time after the notice is sent out to eligible members for the members to travel to Kritias. When the invasion timer counts down to 29:59, everyone in Kritias who is at Set B maps will be channelled to a specific channel depending on server (Channel 18 for GMS, Channel 7 for MapleSEA or Channel 1 for EMS) and you cannot change channel or sit on chairs while in invasion. Invasion ends once the commander dies (virtual health of commander is 0 or negative) or when the time reaches 00:00, whichever's earlier.

Late entry
You will be automatically channelled to the invasion area and channel when you enter Kritias while the invasion is still on-going. You can still participate in the invasion just that if you come on time, you will have more time for your missions and you will end up killing more monsters also, so your contribution is higher. However, if you are late you can still join the invasion just that you have lesser time to clear your missions and to gain contribution, which in serious cases if you still have 0 contribution when the invasion ends you are not eligible for rewards.
 * "What if I came late?"

If you join back before the invasion ends, you can still continue as per normal and your records will still stay. If the invasion ended, you can go to Brundel at North Barracks to receive your rewards as per normal.
 * "What if I left the map or disconnected during invasion?"

Mechanics
There will be an Invasion Status UI. Click on + Sign to expand the window. There are 3 stages of the UI: The commander has a virtual health of 100,000,000. At monster areas, instead of the usual monsters, it will spawn monsters under the commanders instead. These monsters are Level 190 and has ranging HP of around 30 to 40 million. They reward about 115 to 125 thousand EXP. However less people train here due to its worse EXP ratio. Monsters have approximately 1% chance (at 1x drop rate) to drop a Medal of Damage (looks like a black ball), which deals anywhere between 10,000 to 400,000 damage to the virtual health of the commander. Additionally you can accept mission from Brundel at the North Barracks which deals 500,000 to 1,000,000 damage to the virtual health of the commander when completed. Lower the virtual health to 0 before the 30 minutes is up to win! If the commander still survives after the timer reaches 0, you lose!
 * Shows timer only
 * Shows timer, virtual commander HP and your contribution
 * Shows timer, virtual commander HP, your contribution, your total tasks completed (looting 1 Medal of Damage or clearing 1 mission counts as 1 task) and Damage Log (shows boss activity and the past 50 virtual damage done by you and other users, like how chat log works)

Missions
Here is the rough guideline of the missions. Note that for item collection quests, they are much easier to complete than monster killing quests since monster spawn is random and gets worse with a greater variety of monsters.
 * The missions are relatively easy, especially when the commanders are Hilla and Magnus (unless one of the commander is arkarium). These deal a very stable damage to the virtual health, thus it can be used to obtain the final shot to the commander before it dies.
 * Once you completed a mission you can accept another one immediately (you can get back the exact same mission as before).
 * If you forfeited the mission (by quitting the quest using quest log), you have to wait for 2 minutes (counted from the time you accept the mission) before you can take another one again (and even then you can get back the same mission). This rule does not apply if you have a mission that you received from previous invasions and have yet to be completed.
 * Note that if you have a completed mission from previous invasions but you did not clear it, if the mission involves killing monsters only, you can clear it for the next invasion for instant damage but if it involved item collection, the mission will be rejected (but items will stay with you so if you receive the mission again you can clear it instantly).

Hilla

 * Kill 30 of a specific monster belonging to Hilla (excluding Bloodfang, Master Bloodfang and Hilla)
 * Collect 8 broken jewels from the skeletons
 * Collect 1 part of a bone (specified) from the skeletons.
 * Skeletons will drop a bone, which when picked up will have a chance to give you the quest item. If it is found to be a different part or when your etc inventory i full, you will receive nothing, so do not worry about it flooding your inventory.
 * Collect 8 supply boxes from the skeletons
 * Collect 3 mysterious powder from Ghost of Aswan in invasion.

Magnus

 * Kill 30 of a specific spector (except Master spectors and Magnus)
 * Collect 3 different Magnus letters (1st order, 2nd order, 3rd order) from the spectors
 * Collect 1 letter handwritten by Magnus from the spectors.
 * Collect 10 spector meat from the shorter spectors.

Von Leon

 * Kill 30 of a specific monster under Von Leon (except Ani and Von Leon)
 * Collect 2 spears from the Vultures, 2 walls from the Mini Castle Golems and 2 bombs from the Bearwolves.

Arkarium

 * Kill 30 of a specific monster under Arkarium (except Master Nethermonk and Arkarium)
 * Collect 10 of the juices from the monks.
 * Collect 8 time fragments from the monks.

Master Monsters
When the virtual health of the commander reaches 75% or lesser, Master Monsters will start to spawn. When this happens, Brundel will say "The invasion is intensifying! More powerful enemies will appear!" Requirements to spawn: They have 1 billion HP and rewards 200,000 EXP when killed. It will also drop 2 Medals of Damage at a 100% rate and is unaffected by drop rate increments.
 * 3 Master Monsters within the whole of Kritias monster maps in that channel.
 * 1 will be spawned at a random monster map that contains at least 1 player if the maximum population is not hit every spawn interval.
 * More than 1 master monster can spawn at the same map.

Commander Monsters
When the virtual health drops to 25% or less, this is when the commander gets desperate and starts to appear in Kritias and kill you. Brundel will say "There are signs that the Commanders will be joining the battle! Be prepared!" It behaves almost exactly as hard mode bosses (including meteor bombs and zone system but excluding sleeping gas for Magnus). When you die, you lose full EXP so it is recommended that you run away. When the bosses are killed, note that the invasion will not end. Istead it will drop 6 Medals of Damage. At any time, 1 of each of the commander invading can spawn (and both of them can spawn in the same map). They have about 6.3 billion HP.
 * Note: You do not need to kill these on-site commander monsters to win. In fact killing them does not make you win also. You just have to deplete the virtual health of the commander to 0 to win.

Rewards
The rewards depends on the following factors:
 * Invasion win/lose
 * Contribution in invasion
 * Final hit bonus

After the invasion you have to go to Brundel in North Barracks to accept the rewards. You must do so before the warning of the next invasion or else you forfeit your rewards. You are rewarded anti magic and anti magic stones. Anti magic reward: Your contribution is the total amount of damage done to the virtual health of the commander in that invasion session. Maximum half magic is 1000 per invasion session and does not count towards the daily 10,000 half magic limit and is unaffected by AMP entropy effects.
 * If you win the invasion, $$Amount = Contribution/3000 $$, rounded down
 * If you lose the invasion, $$Amount = Contribution/5000 $$, rounded down

Anti magic stone reward:
 * 0 if you lose the invasion
 * 1 if you win the invasion and done at least 1 contribution
 * 4 if you win the invasion and deals the final blow to the virtual health (which cause it to go down from positive to 0 or negative) before the commander dies.

Hunting
You can hunt monsters in Kritias at any time (Including invasion timings). These monsters have a low chance to drop a fragment of anti magic (including invasion monsters). The chance is estimated to be around 0.2% to 0.5% at 1x. When collected, it is used immediately (10-20 per fragment, additional 50% if AMP entropy is used). The base amount counts towards the 10,000 anti magic limit while the 50% additional from AMP entropy is not counted towards the limit.

Coins
The acquired anti magic and anti magic stones can be used to synthesise into coins. Note: Anti magic stone cannot be broken to form anti magic, and neither can you fuse anti magic to form anti magic stones.
 * 700 anti magic is needed for an Enheim coin.
 * 1,200 anti magic and 1 anti magic stone is needed for a Kritias coin.