Challenge Maze (Spring 2021)

This page is for the Spring 2021 version of the Challenge Maze. For previous versions, see Challenge Maze (Autumn 2020) and Challenge Maze (Spring 2020).

Mazes

Adventurer's Forest, Ancient Arena, Avalon Fortress, Bloody Fortress, Borderland, Bracada College, Card Wonderland, Chaos Abyss, City of Oblivion, City of Steam, Cloud Island, Desert Oasis, District 91, Dracula's Castle, Dragon Valley, Eden's Land, Erathia, Forest of Whispers, Gods' Chessboard, Hell Frontier, Hero's Village, Land of Comet Crash, Lost Temple, Martial Art Island, Pirate's Port, Promised Land of Forging, Saint's Tower, Sdorica, Skeleton Island, Spacecraft Ruins, Temple of Mars, Wonderland of Nature

Challenge Maze (Spring 2021)
File:Challenge Maze (Spring 2021).png
Type	Maze
Source/Unlock	Clear Chaos Abyss
Normal reward	None
Raid boost	N/A
Raid reward	Unknown
Gumball Specific	Gumball specific infos

Stages

Endless Mode - (Difficulty 52) - 0 

There is a mysterious isle at the center of Erathia. Reality and illusion are obscured at this place. It's the perfect place for adventurers to challenge themselves.

Enemies

Usual Enemies

Enemy	Skill	Other info
Vergil Experimental Mecha Machine	Resonance Test: Increase Attack for each companion that exists; Decreases the HP for each companion that dies. AlloyArmor: Spell Resistance +30%, Physical Resistance +30% Self-Explosion (F40+): Self-explodes in 10 rounds, dealing 400% damage Rampage (F70+): Double Attack while HP is lower than 50%	Can drop Power Core.
Steam Mecha I Machine	Strategic Cooperation: When present, Seam Armor 2 and 3 Physical and Spell Resistance +30% Alloy Armor: Spell Resistance +30%, Physical Resistance +30% Ancient Component: When Steam Armor 2 and 3 are used at the same time, death will drop Ancient Component Mech Protection (F40+): Takes damage for companions of other types. Trinity (F70+): When three types of steam mecha appear on a floor, attack and HP +100%, Physical Resistance and Spell Resistance +50%
Steam Mecha II Machine	Strategic Cooperation: When present, Steam Armor 1 and 3 HP +50% Alloy Armor: Spell Resistance +30%, Physical Resistance +30% Ancient Component: When Steam Armor 1 and 3 are used at the same time, death will drop Ancient Component Heavy Mech (F40+): When counterattacking, deals extra damage to the target (Extra damage dealt equals to 20% of Gumball HP) Trinity (F70+): When three types of steam mecha appear on a floor, attack and HP +100%, Physical Resistance and Spell Resistance +50%
Steam Mecha III Machine	Strategic Cooperation: When present, Steam Armor 1 and 2 Attack +50% Alloy Armor: Spell Resistance +30%, Physical Resistance +30% Ancient Component: When Steam Armor 1 and 2 are used at the same time, death will drop Ancient Component Aggressive Mech (F40+): When present, all companions Attack +30% Trinity (F70+): When three types of steam mecha appear on a floor, attack and HP +100%, Physical Resistance and Spell Resistance +50%
Maintenance Type V-Q53 Machine	Repair: Casts once every 3 rounds to help all companions recover HP Alloy Armor: Spell Resistance +30%, Physical Resistance +30% AI Component: Always drop AI Component when killed by the mech creations Defensive Attack (F40+): May deal double damage when counterattacking Parry (F70+): 25% chance to be immune to physical damage	Can drop
Surveillance Type II-Z49 Machine	Thermal: May deal double damage when counterattacking; when attacked by mechanical creatures, will not counterattack Alloy Armor: Spell Resistance +30%, Physical Resistance +30% Airship Component: Always drop Airship Component when killed by the mech creations Scan (F40+): When countering, adds disrupting effect (+50% damage suffered, lasts 3 rounds) Alarm (F70+): Flee after 5 rounds and summon 3 mech companions	Can drop
Bomber Type V-L23 Machine	Bombing: Launches an attack every 2 rounds, inflicting Burning effect (loses HP each round, lasting for 3 rounds) Alloy Armor: Spell Resistance +30%, Physical Resistance +30% Siege Component: Always drop Siege Component when killed by the mech creations Targetting (F40+): Ignores the enemy Dodge +100% Successive Attack (F70+): When attacking, 50% chance to attack mech creations as well (prolongs the cooldown of Mech creations by 1 round)	Can drop Power Core or

Boss (Frost Titan)

Frost Titan

Beast Class

Floor	Attack	HP	Frost Halo Initial %
30	43	667	6%
40	70	1,316
50	115	2,537	10%
60	193	4,750
70	302	8,768
80	508	15,924
90	909	28,667
100	1,533	48,522
110	2,463	78,122
120	3,801	120,683

Skills:

• Frost Impact: Attacks once every 3 rounds, dealing 300% damage to enemies
• Frost Halo: Immune to water spell and cause damage to enemy in each round (damage value is x% of enemy's maximum HP as above)
  • Note: The only ways to reset Frost Halo damage are death (and resurrection, obviously) or casting Timestill or Hex.
• Gene Modification Device: Increases Frost Halo effect by 1% each round
• Heavy Steam Armour: Physical Resistance +50%, Spell Resistance +50% (Shield loses validity when the accumulated damage is equal to 50% of HP)

Special Maze Mechanisms

This challenge maze brings together some elements from the various mech-themed dungeons, partners (somewhat similar to Cloud Island) and floor dependent monster skills like in previous challenge mazes.

You find an Engineering Manual on floor 1 with 3 tabs : Mechanology, Military Science, Aeronautics.

Mechanology & Soldier R-32

The Mechanology tab gives you the "Mech Soldier R-32" mecha partner and improves it. It requires and to upgrade.
To upgrade everything in the tab (without free upgrades) costs 36  and 366 .
By default, the soldier attacks every 7 rounds.

On the left hand side of the engineering tab, you have the skills:

Name	Effect	Core Effect	Partner
Fog Cover	When entering next floor: all enemies accuracy -6/12/18/24/30% (Lasts 6 rounds. Effect halved against boss)	Gumball Dodge +3/6/9/12/15%, max Dodge +1/2/3/4/5%	Soldier
Personal Cloaking Device	First attack deals extra damage by 10/20/30/40/50%	Soldier's cooldown +4 and Attack +30/60/90/120/150%	Soldier
Boxing Gloves P-21	6/12/18/24/30% chance to deal double damage when attacking	Inflicts Puncture effect for each Attack and Target Combo (loses X HP each round and lasts 3 rounds) X = Attack * 4/8/12/16/20%	Soldier
EMP Grenade L-7	Collapse effect is inflicted every 3 attacks launched (Damage taken +40/80/120/160/200%, lasts 4 rounds)	Consumes 5/4/3/2/1 extra Power Core to cast Magnet Grenade Formation to remove target's buffs within damage range. (Effect will trigger only once. Invalid against Boss)	Soldier

Middle part of the tab:

• Mech Soldier R-32 : Get the soldier
• Mechanical Bearings: Soldier cooldown -1/2/3 rounds
• Discrete Bearings: EP +5/10/15 when entering next floor
• Prosthesis: Soldier's combos' effects +6/12/18/24/30%

Right hand side of the tab:

• Automatic Sensor: Soldier's Attack and Power +1 per 16/12/8 enemies defeated
• Bone Armor: Soldier's Attack + Floor * 40/80/120%
• Smart Ship: Soldier's Power + Floor * 40/80/120%
• Power Combat Suit CMC-300: Gumball's Attack increased by Soldier's Attack * 6/12/18/24/30%
• Energy Transformation System: Gumball's Power increased by Soldier's Power * 6/12/18/24/30%

Unlocked alongside Alien Technology:

• Tracking-attack System: Soldier's Attack and Power +6% per visible enemy

Military Science & Tank T12

The Military Science tab gives you the "Tank T-12" mecha partner and improves it. It requires and to upgrade.
To upgrade everything in the tab (without free upgrades) costs 36  and 366 .
By default, the Tank attacks every 6 rounds.

On the left hand side of the engineering tab, you have the skills:

Name	Effect	Core Effect	Partner
Battlefield Scanning	Battlefield Scanning status when entering next floor: Extra damage +6/12/18/24/30%, lasts 5 rounds	Increase scan effect to 12/24/36/48/60%. Prolong scan time for 1 rounds per new enemy that appeared.	Tank
Optical Generator	Inflict severe injury when launching first attack to the target: loses X HP each round, lasts 3 rounds X = Attack * 5/10/15/20/25%	Removes all debuffs and increases the effect by 10/20/30/40/50% when casting Defensive Formation	Tank
Enobis Double-gauge Artillery	When attacking, spurts 6/12/18/24/30% damage to the enemies nearby	When attacking, 6/12/18/24/30% chance to deal an extra attack	Tank
Concussive Howitzer	Deal extra 8/16/24/32/40% damage when attacking the enemy in debuff status	Tank that deployed as the main has 6/12/18/24/30% chance to launch an attack when mechanical soldiers or combat airship attack the enemy in debuff status	Tank

Middle part of the tab:

• Tank T-12 : Get the Tank
• Eureka Cartridge Loader: Tank cooldown -1/2/3 rounds
• Artillery Rifling: Defense +2/4/6
• Tank Body: Tank's combos' effects +6/12/18/24/30%

Right hand side of the tab:

• Self-propelled Artillery: Tank's Attack and Power +1 per 20/15/10 enemies defeated
• Armoured Construction: Tank's Attack + Floor * 30/60/90%
• Interal Combustion Engine: Tank's Power + Floor * 30/60/90%
• Steel Frame: Gumball's Attack increased by Tank's Attack * 8/16/24/32/40%
• Tank Powertrain: Gumball's Power increased by Tank's Power * 8/16/24/32/40%

Unlocked alongside Alien Technology:

• Tracking-attack System: Tank deals an extra 8% damage when enemy HP is above 50%

Aeronautics & Airship S-77

The Aeronautics tab gives you the "Combat Airship S-77" mecha partner and improves it. It requires and to upgrade.
To upgrade everything in the tab (without free upgrades) costs 36  and 366 .
By default, the Tank attacks every 8 rounds.

On the left hand side of the engineering tab, you have the skills:

Name	Effect	Core Effect	Partner
Aerial Monitoring	Obtain Aerial Monitoring Halo when entering next floor: All enemies Attack -6/12/18/24/30% and Damage taken +6/12/18/24/30% Lasts 5 rounds, effect halved against boss	Deals extra X damage to the target when combat airship is attacking (stackable, valid on the current floor) X = Attack * 6/12/18/24/30% Actually: place a Targetting cumulative effect on the target that increase damage suffered form attacks by the target by X. (Uses a special debuff slot)	Airship
Strategic Hovering	All present mech creations' Attack +2/4/6/8/10 per 2 attacks launched Can be stacked 3 times, valid on the current floor	Encourages all mech creations when attacking: Attack +6/12/18/24/30%, lasts 4 rounds	Airship
Diver Bombsight H-3	Deals extra X damage to all enemies when combat airship cast target combo X = Attack * 3/6/9/12/15%	Deals extra X damage to all enemies when all mech creations cast target combo X = Attack * 3/6/9/12/15%	Airship
Air-to-Ground Gun	Deals extra X damage to boss and steam mecha when attacking or using target combo X = Attack * 14/28/42/56/70%	Launches 1/2/3/4/5 extra attack when casting Valkyr Surge and 20% chance to deals damage *3 (Can be triggered only once per floor)	Airship

Middle part of the tab:

• Combat Airship S-77: Get the Airship
• Congealer: Airship cooldown -1/2/3 rounds
• Cobra Maneuver: Engineering component drop probability +5/10/15%
• Airframe: Airship's combos' effects +6/12/18/24/30%

Right hand side of the tab:

• Self-propelled Artillery: Airship's Attack and Power +1 per 12/9/6 enemies defeated
• Armoured Construction: Airship's Attack + Floor * 50/100/150%
• Interal Combustion Engine: Airship's Power + Floor * 50/100/150%
• Titanium-based reframing: Gumball's Attack increased by Airship's Attack * 5/10/15/20/25%
• Airship Powertrain: Gumball's Power increased by Airship's Power * 5/10/15/20/25%

Unlocked alongside Alien Technology:

• Tracking-attack System: Airship deals an extra 8% damage when enemy HP is below 50%

Combos

Name	Effect	Cost	Partner
Pulse Generator	Put a Pulse Generator (lasts 3 rounds) Pulse Generator is a building that deals X damage each round to all enemies with X = Power * 60% (not impacted by combo buffs, only 1 can be active at any time)	2	Soldier
Pulse Jammer	Put a Pulse Jammer (lasts 3 rounds) Pulse Generator is a building that deceases all enemies' Attack and Accuracy by 20%. Deals Power * 150% damage to the enemy each round (not impacted by combo buffs, only 1 can be active at any time).	5	Soldier
Electric Grenade	Deals 300% * Power damage to enemy, inflicting Current Disorder effect (Attack -30%, lasts 4 rounds)	2	Soldier
Magnet Grenade Formation	Deals 250% * Power damage to enemy, inflicting Electromagnetic Interference effect (Unable to take action or counterattack, lasts 4 rounds, does bot come with any immunity to further control effects)	5	Soldier
Fire Siege	Other mech creations are launching an extra attack when Tank is attacking (lasts 3 rounds)	2	Tank
Metal Storm Programming	All mech creations launch an attack each round (lasts 3 rounds)	5	Tank
Combat Support	Casts Energy Shield on gumball and absorb 360% * Power damage. Damage taken -20%. (lasts 4 rounds)	2	Tank
Defensive Formation	Casts Energy Shield on gumball and absorb 600% * Power damage. Damage taken -50% and reflect damage by 50%. (lasts 4 rounds)	5	Tank
Area Bombing	Deals 210% * Power damage to the enemy and spurts 50% damage to nearby enemies. Turn over slates in spurt range. 20% chance to deal double damage	2	Airship
MBDA MICA	Deals 280% * Power damage to all enemies. Turn over all slates on current floor 30% chance to deal damage twice	5	Airship
Dive Attack	Launches 3 attacks on visible enemies for 120% * Power damage each	2	Airship
Valkyr Surge	Launches 5 attacks on visible enemies for 120% * Power damage each. 20% chance to deal damage twice.	5	Airship

Alien Technology

This is a 4th tab that unlocks when giving for the second time to #Dr. Dwarf.
It also unlocks an extra Tracking-attack System tech in the other 3 tabs.
This tab has 16 techs for a total cost of 80 , each tech has only 1 rank.
Techs going clockwise for each group of 4 linked techs:

1. Power Core Recycle: 20% chance to get power core when attacking the enemy with the target combo
   1. Cooperative Strategy Unit I: In combo position I, all mech creation's the effect of target combo +15%
   2. Cooperative Strategy Unit II: In combo position II or III, all mech creation's the effect of target combo +15%
   3. Energy Supply Optimization: 15% chance not to consume Power Core when casting combo.
2. AI Component Detection Technology: Obtain when entering a floor that is a multiple of 3
   1. Siege Component Detection Technology: Obtain when entering a floor that is a multiple of 3
   2. Ancient Component Detection Technology: Obtain when entering a floor that is a multiple of 5
   3. Airship Component Detection Technology: Obtain when entering a floor that is a multiple of 3
3. Titanium Shell Transformation: Increases all mech creation's Attack and Power by 1 per 15 enemies defeated
   1. Power Control: Increases damage by an extra 40% when mech creation launch the attack in the same round
   2. Decapitation Strike: When mech creations attack, kill enemies whose HP is lower than 20% (invalid against boss)
   3. Attack Mode Optimization: 20% chance to decrease attack cooldown by 1 when mech creation attacks.
4. Iron Exoskeleton: Gumball's damage taken -15%
   1. Steroid Injection: Gumball's attack +1 per 6 enemies defeated
   2. Mech Weakness Analysis: Gumball deals 20% extra damage to mechanical enemies
   3. Magic Algorithm Optimization: Gumball's power +1 per 6 enemies defeated

Maze Occurrences

Adventurer's Gravestone

Interact to summon a ghost. Kill to get rewards

Airship Console

Use to call your airship to clean the room.
Appears randomly on a few floors, including boss floors.

Amir's Shop

Can appear on various floors after you have cast a Lightning Bolt on Amir. Items are sold in exchange for

• 3x Odd Oil: 2  (all mechs attack +50% for 6 rounds)
• Floating Robot: 2  (summon floating robot)
• 6x Power Core: 2 
• Tech increase book: 2  (increase random tech in one of the first 3 tabs)
• Amir's Album: 3  ("Alien tech" increase)
• Shape Memory Alloy: 2  (increase random attribute of all mechs)

Floating Robot:

• Inherits 80% of your current Attack and Max HP
• Strafe : Launches 3 attacks each round, dealing 150% damage to the enemy
• Scan: Locate the Key

Ancient Magic Array

Kill all the monsters to be able to use the Array. Rewards for activation:

• Suffer damage for 10% of max HP
• One stat gain: Attack+ 1 / MP +20
• ...

You can also destroy the array (including after having it activated):

• 3x {{Cost||AI Component}

Cog Shop

• x3 - 150 EP
• x3 - 150 EP
• x3 - 150 EP
• x2 - 600 EP
• Power Core x3 - 300 EP
• A tech increasing book x1 - 600EP

Current Interference Device

You cannot cast spells while it is present. You can destroy it once you reach it. Possible rewards:

• 3x 

Dr. Dwarf

You will find him as a boss reward on floor 30.
He gives you a bracelet that you can use to teleport to a special floor to meet him again.
After having used the bracelet, you have to wait 10 floors before you can use it again.

Special floor:

• 1st time: give him 3x : he will reduce the cooldown of your partners by 1
• 2nd time: give him 10x  and talk to him again, you can read the notes on the table to unlock "Alien Technology" engineering tab.
• 3rd+ , after you met him a second time as Boss reward: You can talk to him to exchange regular components for at a 3:1 rate (unlimited).

You can also use a furnace:

• Transform a piece of equipment into a random piece of equipment of the same rank
• The furnace often explodes on second use
• Exploded furnaces will be back on the next visit.

Once you have the "Alien Technology", Dr. Dwarf will reappear as Boss reward and will give you an item that you can use to combine the 3 mechs into one for 10 floors.

Electrical Apparatus

At certain intervals, it will automatically repair all of the enemy mechanical creatures and restore their HP. Destroy for a reward:

• 3x
• ...

Forgotten Jail (The)

Special cave with 2 Robot remains that you can search and a Amir's Head. Zap it with a Lightning spell to interact. On later floors, Amir's Shop will start appearing randomly offering unique items in exchange for Ancient Components (see #Amir's Shop)

Goblin's Lab

Give requested component for a reward:

• Rusty Gear: all mechs +1 Power
• Rusty Bolt: all mechs +1 Attack
• ...

Gray Dwarf's Lab (Helm)

Give requested components for a reward. Possible rewards:

• Bulletproof Cloak
• Electric Shock Ring
• Mechanical Pendant
• Learn a technology from the Engineering Manual
• Attack +2
• ...

Gray Dwarf's Lab (Purple)

Give requested components for a reward. Possible rewards:

• One stat gain: Power +2 / MP +30
• Learn a technology from the Engineering Manual
• 3x Gray Dwarf Explosive Mine M32
• 2x Gray Dwarf Explosive Mine M48

Guard Room

Spawns enemies every 5 turns until it run out or you clear it. Contains enemies guarding the following:

• Researcher's Remains (See corpse section)
• Steel Cabinet: Power Core

Corpses

Corpse	Regular Loot	Farplane's Lantern Soul
Researcher's Remains (Multiple)	Engineering Manual, ... (on F1)	Broken Researcher's Soul: EP cost -1% in Cog Shop (max -30%) Researcher's Intact Soul: EP cost -3% in Cog Shop (max -30%)
	Various Engineering Component
Driver's Remains (multiple)	2x Power Core	Broken Driver's Soul: Obtain 1  Complete Driver's Soul: Obtain 3

Tips

• Some Divine Dragon Wishes apparently cannot be obtained here: the ones giving , money, minerals and .
• Once you have the 3 maze partners, you cannot invoke any permanent allies any more. It is unknown at this stage whether Image of Demi-Gods and Semi-Devils is an exception like in Cloud Island or not but it is presumed to be.
• For the task about reaching level 70 without upgrading the engineering manual, you do not have to fear upgrade rewards from the buildings, you can still achieve the task after having received some of those.