MapleStory/Grandis

Grandis is 1 of the dimensions found in MapleStory.

Cernium
Cernium is the 1st area of Grandis, and requires Level 260 or above. There are 5 main areas. Monsters have 65x the HP and gives 9.76x the EXP.
 * 1) Rocky Beach: Monsters are Level 260. Requires 50 Authentic Force.
 * 2) Cernium West Castle Walls: Monsters are Level 261. Requires 50 Authentic Force.
 * 3) Cernium Square: Town
 * 4) Cernium East Castle Walls: Monsters are Level 262. Requires 50 Authentic Force.
 * 5) Royal Library: Monsters are Level 263~264. Requires 50 Authentic Force.

A Daily Quest can be performed to receive 5 Authentic Symbol: Cernium everyday. You can choose your daily quest. (All maps require 50 Authentic Force)
 * Kill 1,000 Black Sun Soldiers
 * Kill 1,000 Black Sun Archers
 * Kill 1,000 Monster Seagulls
 * Kill 1,000 Fire Spirits
 * Kill 1,000 Wandering Scholar Spirits
 * Kill 1,000 Curious Scholar Spirits

Fallen Cernium
Fallen Cernium is the aftermath of Cernium. Requires Level 265 or above. There are 4 main areas. Monsters have 84.5x the HP and gives 10.83x the EXP.
 * 1) Battle-ravages West Castle Walls: Monsters are Level 265. Requires 70 Authentic Force.
 * 2) Broken Cernium Square: Town
 * 3) Battle-ravages East Castle Walls: Monsters are Level 266~267. Requires 100 Authentic Force.
 * 4) Burning Royal Library: Monsters are Level 268~269. Requires 100 Authentic Force.

A Daily Quest can be performed to receive 5 Authentic Symbol: Cernium everyday. You can choose your daily quest.
 * Kill 1,000 Floras Soldiers (70 Authentic Force)
 * Kill 1,000 Floras Monks (70 Authentic Force)
 * Kill 700 Floras Assassins (100 Authentic Force)
 * Kill 700 Floras Panzers (100 Authentic Force)
 * Kill 700 Black Sun Bombers (100 Authentic Force)
 * Kill 700 Black Sun Monks (100 Authentic Force)

Where Serene took the power of the holy sword. However, (redacted due to spoilers), so she is coming after you now. As such, she became a boss monster in Cernium.
 * Serene the Chosen one

Hotel Arcs
Hotel Arcs is the 2nd area in Grandis. Requires Level 270 or above. There are 4 main areas.
 * 1) Outlaws' Wasteland: Monsters are Level 270. Requires 130 Authentic Force.
 * 2) Fallen Wilderness City: Town
 * 3) Romantic Drive-in Theater: Monsters are Level 271~272. Requires 160 Authentic Force.
 * 4) Train With No Destination: Monsters are Level 273~274. Requires 200 Authentic Force.


 * Monsters Level 270 have 92.1x the HP and gives 11.18x the EXP.
 * Monsters Level 271~272 have 99.71x the HP and gives 11.54x the EXP.
 * Monsters Level 273~274 have 109.85x the HP and gives 12.02x the EXP.

A Daily Quest can be performed to receive 5 Authentic Symbol: Hotel Arcs everyday. You can choose your daily quest.
 * Kill 1,000 Iron Bullet Slayers (130 Authentic Force)
 * Kill 1,000 Sandblade Looters (130 Authentic Force)
 * Kill 700 Exploring Foxilions (160 Authentic Force)
 * Kill 700 Junk Collector Foxilions (160 Authentic Force)
 * Kill 500 Strict Station Employees (200 Authentic Force)
 * Kill 500 Masterless Watchdogs (200 Authentic Force)

Authentic Force
Authentic force is used in Grandis to penetrate the defense system of monsters in Grandis. Authentic Symbols are the only source of Authentic Force. Based on your Authentic Force and required Authentic Force, your final damage is adjusted to between 5% to 125% of the original damage and monster damage will hit between 100% to 200% of its original damage (not applied to %HP attacks).
 * For every 1 Authentic Force below required, you deal 1%p lesser final damage. (Max reduction of 95%)
 * For every 2 Authentic Force above required, you deal 1%p more final damage, rounded down. (Max increase of 25%)
 * Normal damage taken is increased to 1.5x for having 1~50 Authentic Force below required, and increases to 2x if it is even lower. Normal damage taken cannot be reduced further once the force requirement is met.

Authentic Force can be obtained by equipping Authentic Symbols. You gain 10 Authentic Force per Authentic Symbol Level equipped.

Authentic Symbols
Authentic Symbols can be leveled up to give more Authentic Force by equipping duplicated Authentic Symbols. Authentic Symbols can only be obtained from daily quests. Monsters will not drop any authentic symbols.

In addition, events may give out Authentic Symbol Selector coupons to exchange for a symbol of your choice (only the ones that you have obtained a symbol from quest are allowed to be chosen)

"floor" means rounding down.
 * Required number of symbols to level up: $$9 \times SymbolLevel^2 + 20 \times SymbolLevel$$
 * Required mesos to level up
 * Cernium: $$100,000 \times floor(970.2 + 884.4 \times SymbolLevel) $$
 * Hotel Arcs: $$100,000 \times floor(1.1 \times floor(970.2 + 884.4 \times SymbolLevel)) $$

Both symbols and mesos are needed to increase the symbol level.

You can use a lower growth symbol to combine with a higher growth symbol at no additional cost, but mesos used on the lower growth symbol are not refunded. This makes it possible to exceed the required symbol for the next level, and the excess is carried over.


 * Cernium


 * Hotel Arcs

Authentic Symbols will increase your Final Stats and Authentic Force.
 * All Jobs (except Xenon and Demon Avenger): 200 Final Primary Stat per 10 Authentic Force from Authentic Symbols + 300 Final Primary Stat per unique Authentic Symbol equipped
 * Xenon: 96 Final STR, Final DEX and Final LUK per 10 Authentic Force from Authentic Symbols + 144 Final STR, Final DEX and Final LUK per unique Authentic Symbol equipped
 * Demon Avenger: 4,200 Final HP per 10 Authentic Force from Authentic Symbols + 6,300 Final HP per unique Authentic Symbol equipped

Event Authentic Symbols History (MSEA)
This section is calibrated to the MapleSEA service.

Values in brackets come from selector coupons between Arcane and Authentic Symbols.
 * Additions
 * Maple Live
 * 100 from shop
 * (37) from progress
 * 31 January 2022 stay online for 1 hour without disconnecting event: (25)
 * Chew Chew Food Festival: 100 from shop
 * (Aquila and Bootes only) 3 March 2022 rollback compensation: (25)
 * 11/12 March 2022 network error compensation: (25)
 * Blooming Forest
 * 100 from shop
 * (25) from progress
 * 11 May 2022 stay online for 1 hour without disconnecting event: (25)
 * Destiny
 * 100 from shop
 * (40) from stellar pass
 * (40) from paid stellar pass
 * 8 August 2022 stay online for 1 hour without disconnecting event: (25)
 * Spiegelmann Starlight Box Day 3: (10)
 * Night Troupe cannon event: (0.7~1.2) daily on average based on maximum participation, event lasts for 34 days
 * I didn't do anything for 60 hours: (10)
 * Golden Carriage 81 stamps: (40)

(Each day missed would be -5 symbols per area, and the dates below show the highly probable missed dates)
 * Subtractions
 * 19 November 2021 server downtime (~8.15pm onwards)
 * 10 August 2022 server downtime (~12.05am onwards)

Without events, the authentic symbol timeline based on perfect daily quest clears are as follows: https://media.discordapp.net/attachments/707571615365464124/864466660864688138/Screenshot_20210713-192049_Sheets.jpg