Tower of Iron Parasite

As of 25.10.2021, the Tower of the Iron Parasite game mode has been retired from gameplay. This page remains here as reference/legacy text.

Tower of Iron Parasite (also known as Roguelike, Iron Tower or simply Tower) is a game mode where players send a crew of 40 units to collect Resources, Equipment Promotion Materials, and Rogue OS. This mode follows the Roguelike genre, where players start with 3 semi-random units of the chosen 40 and explore randomly selected preset maps with set events and encounters.

There are 24 floors altogether with floor 24 repeating forever, and the mode only ends when the player chooses to retreat or is wiped out.

Due to the large number of units required to enter, large number of fights and traps that reduce HP of the whole crew and extremely limited healing option, Tower of Iron Parasite is not recommended for new players.

Overview

Tower of Iron Parasite Roster

The player have to pick 40 units in order to participate in a Tower Raid. Once included into the roster, the unit will not be able to be edited in any way. The players will have to equip their units before putting them into the roster. Units in the roster are exempted from being placed into regular squad or base operations. Likewise, units in a squad or base operations are exempted from the roster selection.

The auto-sort function will automatically choose 40 units with the highest attack power score (as seen in the unit profile). Players can click this button to expedite the roster picking process. Chosen units will be highlighted in blue.

When the sortie begins, the player will be given a choice of 1 out of 4 randomly selected units 3 times. If the player is unsastisfied with their selection, they can pick again by going back from the squad formation screen. Do note that the 4 randomly selected units will still be the same, only the player's choice in these 4 units can be different.

Overworld Mechanics

Once the squad has been made, the player is dropped into the tower. All of the player's units will start out slightly injured and scattered due to the rough landing. To play, simply click/tap on a tile to move. Find the Gatekeeper tile and beat it to move on to another map. On most floors, there will be a green indicator around the squad to show the player the way to the Gatekeeper tile. Along the way, the players will run into harmful or debilitating traps, stationary guards, beneficial facilities, and the dreaded Tracker.

The maps are called floors. Floors can have multiple layers, EX: 1-2, 1-3. The number of layers a floor can have depends on the floor. The layout of the map is selected from a pool of presets for that floor. If a floor have multiple layers, it is possible for the game to pick the same layout multiple times. The player can see the layouts here (Editor note: Put the layout sheet some day.) For the sake of brevity, use the term "floors" when referring to a T.o.I. overworld map.

As the player climb to higher levels, the composition of the enemies will get more complex with appearance of dangerous enemies such as the Centurion General. Additionally, the enemies' level will also be increased, even beyond the level 100 cap which corresponds to higher stat. After reaching F24, a new temporary effect will be placed on the player called Increased Difficulty which further increases the enemies' stats. The intensity of this temporary effect increases by 5% every 5 layers the player go through from this point onwards.

To provide leverage against the ironworm horde, the player will have to take advantage over the use of Overworld skills, Consumables, and Permanent Effects in their effort to explore the Tower and reap its boons. Additionally, on the earlier floors, a green indicator may appear around the player's squad to guide them to the Gatekeeper tile.

Besides the indicator, there's also Listen! Event that may randomly occur as the player explore new tiles. This event will provide the player, assuming they can read Korean, hints as to what awaits them in an highlighted unexplored tile.

/insert Listen! quotes here.

Getting to the Gatekeeper tile as soon as possible is encouraged as staying in a floor too long may attract the attention of the Tracker. After the player takes a randomised but high amount of steps in a floor, the Tracker event may initiate. Once it begins, Orangeade will warn the player of an oncoming signal. After another randomised amount of steps has been taken, the Tracker will spawn on a desginated tile and a red indicator with a number will appear around the player's squad to show the distance between the player and the Tracker.

The Tracker is indicated by a tile that has a red circle on it. It can occupy any tile, even unexplored ones. The Tracker will then make its way to the player at the rate of 1 step for each step the player takes. The Tracker will always choose the shortest path to the player. Once the Tracker reaches the player, they will begin a conventionally difficult combat encounter. If the Tracker is defeated but the player is still exploring the same floor, another Tracker event may occur.

Battling the Tracker is heavily discouraged as it has some very dangerous tech and grant very little reward when defeated. It is recommended to either evade it or head straight to the next floor.

Overworld Skills

Overworld skills are skills that can be used when in the overworld. Overworld skills have limited uses depending on the rank of the unit, up to 4 uses if the unit is an SS. The charges for overworld skills will not reset once used. Overworld skills can still be used even if the unit's HP is 0.

Item List
Icon	Name	Effect	Units
	Hazardous Item Disposal Team	Grant Hazardous Item Disposal Team Temporary Effect for the current floor.
	Pre-emptive Attack	Grant Pre-emptive Attack Temporary Effect for 1 combat encounter.
	Infiltration Scouting	Reveal all Guards on the current floor
	Covert Activities	Grant Covert Activities Temporary Effect for for 6 steps.
	Iron Parasite Research	Grant Iron Parasite Research Temporary Effect for 5 combat encounter(s).
	Reconnaissance	Reveals all tiles (up to 2 spaces) around your squad.
	Impermeable Barrier	Grant Impermeable Barrier Temporary Effect for the current floor.
	Field Supply	Produce a random consumable (except PECS Security Card).
	Tactical Bombardment	Remove all Guards within 2 spaces.
	Guerilla Resupply	Special Sealed Containers on the current floor
	No Skills

Consumable Items

Consumable items are special items available to the Tower of Iron Parasite game mode. These consumables provide temporary buffs, debuffs, and enable certain options depending on the context. They are all one time use only but can be acquired in the overworld through the use of supply skills or bought from PECS store.

Item List
Icon	Name	Effect
	EOD drone	Grant Hazardous Item Disposal Team Temporary Effect for the current floor.
	PECS protective clothing	Grant Impermeable Barrier Temporary Effect for the current floor.
	PECS Security Card	Activates the Air Purifier tile to gain Essence.
	Smoke Grenade	Lets you retreat from an enemy encounter before battle begins.
		Lets you re-roll the available options on a shop/upgrade tile.
	Mobile Turret	Grant Suppression Fire Temporary Effect for 2 combat encounters.
	EMP Shell	Grant Circuit Disturbance Temporary Effect for 3 combat encounters.
	Metal Corruption Gas	Grant Melting Armor Temporary Effect for 4 combat encounters.

Permanent Effects

Permanent effects are effects acquired from Corrupted Munition Plants. These effects last until the end of the current run or until they are replaced by an effect of the same category.

• GREEN [Rank B]
• BLUE [Rank A]
• PURPLE [Rank S]
• YELLOW [Rank SS]
• RED [Rank SSS]

Icon	Tier	Effect
Name
Assault	B	ATK +5-10%
	A	ATK +10-15%
	S	ATK +15-20%
	SS	ATK +20-25%
	SSS	ATK +25-30%
Ironclad	B	DEF +5-10%
	A	DEF +10-15%
	S	DEF +15-20%
	SS	DEF +20-25%
	SSS	DEF +25-30%
Deception	B	EVA +5-10%
	A	EVA +10-15%
	S	EVA +15-20%
	SS	EVA +20-25%
	SSS	EVA +25-30%
Guiding	B	ACC +20-30%
	A	ACC +30-35%
	S	ACC +35-40%
	SS	ACC +40-45%
	SSS	ACC +45-50%
Large-Caliber	B	Defense Penetration +20-30%
	A	Defense Penetration +30-35%
	S	Defense Penetration +35-40%
	SS	Defense Penetration +40-45%
	SSS	Defense Penetration +45-50%
All-Weather	B	Fire Resist / Ice Resist / Electric Resist +20-30%
	A	Fire Resist / Ice Resist / Electric Resist +30-35%
	S	Fire Resist / Ice Resist / Electric Resist +35-40%
	SS	Fire Resist / Ice Resist / Electric Resist +40-45%
	SSS	Fire Resist / Ice Resist / Electric Resist +45-50%
Decontamination	B	Status Resist +20-30%
	A	Status Resist +30-35%
	S	Status Resist +35-40%
	SS	Status Resist +40-45%
	SSS	Status Resist +45-50%
Fortress	B	DR +3%
	A	DR +3-5%
	S	DR +5-7%
	SS	DR +10-15%
	SSS	DR +15-20%
Armour	B	SPD +3%
	A	SPD +3-5%
	S	SPD +5-10%
	SS	SPD +10-15%
	SSS	SPD +15-20%
Extinction	B	Additional DMG +3%
	A	Additional DMG +3-5%
	S	Additional DMG +5-7%
	SS	Additional DMG +10-15%
	SSS	Additional DMG +15%
Aerial Defense	B	Barrier 250-300
	A	Barrier 300-350
	S	Barrier 350-400
	SS	Barrier 400-450
	SSS	Barrier 450-500
Long-Range	A	Range +1
	S	Range +1-2
	SS	Range +1-2
	SSS	Range +1-2

Secondary Effect List
ATK +5% 공격력 +5%	DEF +5% 방어력 +5%	EVA +5% 회피 +5%
SPD +3% 행동력 +3%	Additional DMG +3% 피해량 +3%	ACC +20% 적중 +20%
Electric Resist +20% 전기 저항 +20%	Fire Resist +20% 화염 저항 +20%	Ice Resist +20% 냉기 저항 +20%
Status Resist +20% 효과 저항 +20%	Defense Penetration +20% 방어 관통 +20%

• SS munition plants will grant you 1 secondary effect. SSS munition plants will grant you 2 secondary effects.
• Only 1 type of secondary effect is given each. They may overlap with the main effect.
• The combination of secondary effects in SSS munition plants are fixed based on the main effect.
• Only 1 type of elemental resistance is given in All-weather system.

Temporary Effects

Temporary effects are effects that lasts temporarily, which is either the entire floor, combat encounter(s), or the number of step(s) the player takes. Temporary effects are acquired from using consumables, stepping on Chaos Entrophy tile and High-level Radioactive Contamination tile, or by using overworld skills.

Effect List
Icon	Name	Effect
	Increased Difficulty	Increase Enemies' HP +x%, ATK +x%, ACC +x%. Increase acquired essence by x%. Increase Item acquisition rate by x%.
	Poison Trap	All units lose 3% HP per step. Remove 1 stack for each step taken.
	Disappearing Will	At start of wave, decrease all units' ATK by x%. Remove 1 stack for each battle won.
	Vortex of Confusion	At start of wave, decrease all units' ACC by x%. Remove 1 stack for each battle won.
	Exposed Weakness	At start of wave, decrease all units' DEF by x%. Remove 1 stack for each battle won.
	Raging Terror	At start of wave, decrease all units' SPD by x%. Remove 1 stack for each battle won.
	Iron Parasite Research	Increases the amount of Essence gained from Battle by x%. Remove 1 stack for each battle won.
	Hazardous Item Disposal Team	Grant immunity to Unexpected Accidents for the current floor. Remove ALL stacks when advancing floors.
	Impermeable Barrier	Grant immunity to Chaos Entropy and High-level Radioactive Contamination for the current floor. Remove ALL stacks when advancing floors.
	Covert Activities	Moving to Guards does not trigger combat. Remove 1 stack for each step taken.
	Pre-emptive Attack	At start of wave, reduce all enemies' max HP by 20%. Remove 1 stack for each battle won.
	Suppression Fire	At start of wave, reduce all enemies' ATK by 20%. Remove 1 stack for each battle won.
	Circuit Disturbance	At start of wave, reduce all enemies' ACC by 20%. Remove 1 stack for each battle won.
	Melting Armor	At start of wave, reduce all enemies' DEF by 20%. Remove 1 stack for each battle won.

Tile Event

Tile events are events that occur when stepping on an occupied tile. The type of event is dependent on the tile itself. When a tile is not occupied and have already been explored, the player can move past them without clicking them.

Event List
Icon	Name	Effect
	Search for Allies' signals	A missing member joins the Squad OR gain 1000 Essence
	Gatekeeper	Battle with Gatekeeper to gain Equipment Promotion Materials and access to the next Floor or Layer.
	Chaos Entropy I	Inflicts 1 of Disappearing Will, Vortex of Confusion, Exposed Weakness or Raging Terror Temporary Effect for 2 combats (stack with previous one)
	Chaos Entropy II	Inflicts 1 of Disappearing Will, Vortex of Confusion, Exposed Weakness or Raging Terror Temporary Effect for 3 combats (stack with previous one)
	Chaos Entropy III	Inflicts 1 of Disappearing Will, Vortex of Confusion, Exposed Weakness or Raging Terror Temporary Effect for 4 combats (stack with previous one)
	Chaos Entropy IV	Inflicts 1 of Disappearing Will, Vortex of Confusion, Exposed Weakness or Raging Terror Temporary Effect for 5 combats (stack with previous one)
	Chaos Entropy V	Inflicts 1 of Disappearing Will, Vortex of Confusion, Exposed Weakness or Raging Terror Temporary Effect for 6 combats (stack with previous one)
	Contaminated Munitions Plant I	Use 1000 Essence to get 1 of 3 random Tier I Permanent Effects. If used, but none of the Permanent Effects were chosen, refund half of the paid essence Skip to gain 500 Essence
	Contaminated Munitions Plant II	Use 2000 Essence to get 1 of 3 random Tier II Permanent Effects. If used, but none of the Permanent Effects were chosen, refund half of the paid essence Skip to gain 1000 Essence
	Contaminated Munitions Plant III	Use 3000 Essence to get 1 of 3 random Tier III Permanent Effects. If used, but none of the Permanent Effects were chosen, refund half of the paid essence Skip to gain 1500 Essence
	Contaminated Munitions Plant IV	Use 4000 Essence to get 1 of 3 random Tier IV Permanent Effects. If used, but none of the Permanent Effects were chosen, refund half of the paid essence Skip to gain 2000 Essence
	Contaminated Munitions Plant V	Use 5000 Essence to get 1 of 3 random Tier V Permanent Effects. If used, but none of the Permanent Effects were chosen, refund half of the paid essence. Skip to gain 2500 Essence.
	Unexpected Accident I	Inflict 100 Electric damage to 1 random unit
	Unexpected Accident II	Inflict 200 Electric damage to 2 random units
	Unexpected Accident III	Inflict 300 Electric damage to 3 random units
	Unexpected Accident IV	Inflict 400 Electric damage to 4 random units
	Unexpected Accident V	Inflict 500 Electric damage to 5 random units
	Acquire a PECS Security Card	Acquire a PECS Security Card
	Unexpected Accident I	Inflict 100 Fire damage to 1 random unit
	Unexpected Accident II	Inflict 200 Fire damage to 2 random units
	Unexpected Accident III	Inflict 300 Fire damage to 3 random units
	Unexpected Accident IV	Inflict 400 Fire damage to 4 random units
	Unexpected Accident V	Inflict 500 Fire damage to 5 random units
	Unexpected Accident I	Inflict 100 Ice damage to 1 random unit
	Unexpected Accident II	Inflict 200 Ice damage to 2 random units
	Unexpected Accident III	Inflict 300 Ice damage to 3 random units
	Unexpected Accident IV	Inflict 400 Ice damage to 4 random units
	Unexpected Accident V	Inflict 500 Ice damage to 5 random units
	Guard	Battle with Guards to gain Essence Low chance to Drop Rogue OS
	Oservatory	Use 1000 Essence to reveal random tiles on the current floor Skip to gain 500 Essence
	High-level Radioactive Contamination I	All units lose 3% HP per step for the next 2 steps (stack with previous one)
	High-level Radioactive Contamination II	All units lose 3% HP per step for the next 3 steps (stack with previous one)
	High-level Radioactive Contamination III	All units lose 3% HP per step for the next 4 steps (stack with previous one)
	High-level Radioactive Contamination IV	All units lose 3% HP per step for the next 5 steps (stack with previous one)
	High-level Radioactive Contamination V	All units lose 3% HP per step for the next 6 steps (stack with previous one)
	Command Decision System	Gain a Mission
	Emergency Recovery Station I	Use 500 Essence to heal 30% HP to 1 of 3 random units. If none of the units were chosen, refunds 100 essence instead. Skip to gain 100 Essence
	Emergency Recovery Station II	Use 500 Essence to heal 35% HP to 1 of 3 random units. If none of the units were chosen, refunds 100 essence instead. Skip to gain 100 Essence
	Emergency Recovery Station III	Use 1000 Essence to heal 40% HP to 1 of 3 random units. If none of the units were chosen, refunds half of the paid essence instead. Skip to gain 500 Essence
	Emergency Recovery Station IV	Use 2000 Essence to heal 45% HP to 1 of 3 random units. If none of the units were chosen, refunds half of the paid essence instead. Skip to gain 1000 Essence
	Emergency Recovery Station V	Use 2000 Essence to heal 50% HP to 1 of 3 random units. If none of the units were chosen, refunds half of the paid essence instead. Skip to gain 1000 Essence
	Saman Supply Station	Use Essence to buy 1 of 3 random items
	Air Purification Facility I	Must use 1 PECS Security Card to open Gain 3000 Essence
	Air Purification Facility II	Must use 1 PECS Security Card to open Gain 3600 Essence
	Air Purification Facility III	Must use 1 PECS Security Card to open Gain 4200 Essence
	Air Purification Facility IV	Must use 1 PECS Security Card to open Gain 4800 Essence
	Air Purification Facility V	Must use 1 PECS Security Card to open Gain 6000 Essence
	Unexpected Accident I	Inflict 100 damage to 1 random unit
	Unexpected Accident II	Inflict 200 damage to 2 random units
	Unexpected Accident III	Inflict 300 damage to 3 random units
	Unexpected Accident IV	Inflict 400 damage to 4 random units
	Unexpected Accident V	Inflict 500 damage to 5 random units
	Special Sealed Container	Gain Equipment Promotion Materials & Resources

Note: Unexpected Accident tiles will not guarantee wounding units when stepped on. They merely have the chance of wounding random units. The Unexpected Accident tile can deplete a unit's HP to 0, removing them from combat.

Missions

Missions are bonus objectives that the player can acquire by exploring a Command Decision System tile. Completing these objectives will grant the player respective rewards and 50 Pass EXP for the Orca pass. The missions are graded from B to SSS. SS missions and above will no longer grant the player resources, only Equipment Promotion Materials. The player can have up to 5 missions active at the same time.

Missions Missions
Number	Objective		Additional Reward
1	Open 1 Air Purification Facility
2	Open 1 Special Sealed Container
3	Acquire 1 of Mobile Turret, EMP Shell or Metal Corruption Gas	500	x1 x2 x1 x2 x1 x2 x6
4	Acquire 1 EOD Drone	1000	x1 x2 x1 x2 x1 x2 x6
5	Acquire 1 PECS Security Card
6	Acquire 1 PECS Protective Clothing
7	Acquire 1 Smoke Grenade	1000	x1 x2 x1 x2 x1 x2 x6
8	Advance 1 Floor
9	Advance 2 Floors
10	Advance 3 Floors
11	Advance 4 Floors
12	Advance 5 Floors
13	Obtain a highest-rank Permanent Effect(?)
14	Defeat 3 Enemy Encounters
15	Defeat 6 Enemy Encounters
16	Defeat 9 Enemy Encounters
17	Defeat 10 Enemy Encounters
18	Defeat 15 Enemy Encounters
19	Defeat 10 Night Chick-Type Iron Parasites
20	Defeat 20 Night Chick-Type Iron Parasites
21	Defeat 30 Night Chick-Type Iron Parasites
22	Defeat 40 Night Chick-Type Iron Parasites
23	Defeat 50 Night Chick-Type Iron Parasites
24	Defeat 10 Legion-Type Iron Parasites	1000	x1 x2 x1 x2 x1 x2 x6
25	Defeat 20 Legion-Type Iron Parasites
26	Defeat 30 Legion-Type Iron Parasites
27	Defeat 40 Legion-Type Iron Parasites
28	Defeat 50 Legion-Type Iron Parasites
29	Defeat 1 Boss-Type Iron Parasite
30	Defeat 2 Boss-Type Iron Parasites
31	Defeat 3 Boss-Type Iron Parasites
32	Defeat 4 Boss-Type Iron Parasites
33	Defeat 5 Boss-Type Iron Parasites
34	Defeat 10 Scout-Type Iron Parasites	1000	x1 x2 x1 x2 x1 x2 x6
35	Defeat 20 Scout-Type Iron Parasites

Combat Changes

In the Tower of Iron Paradise, if the player is engaged in a combat encounter, either by stepping on a Guard tile, or a Gatekeeper tile, or a tile occupied by the Tracker, they are forced to either forfeit the run, use a Smoke Grenade to fall back into the previous tile, or fight and win the combat encounter. If the player's team is eliminated from the combat encounter, they will have to simply form another team and start the combat encounter again from the beginning. The player can also freely choose to retreat from a combat encounter and re-arrange their team. However, they will have to start the combat encounter from the beginning and units that were eliminated in the encounter will remain eliminated for the rest of the run.

Bosses

Certain floors will have a boss in its Gatekeeper tile. These floors are F5-1, F10-1, F14-1, F19-1. The boss's formation is based on -8EX formations and previous Endless boss formations. Additionally, the player may fight a Tower of Iron Parasite exclusive boss called the Tracker when the Tracker Event is initiated. On earlier floors, the boss floor is populated with tier 5 restoration facility and up to 4 unit search tiles.

Name	Notes
Doom Eater	The unit formation for this boss battle is based on old Doom Eater formation in Endless War. Since it is an early boss at F5-1, it has significantly less HP and DEF in comparison to its Endless War counterpart.
Executioner	The unit formation for boss battle is based on 6-8EX in the main story. With one fewer arms each. It has same stat despite being overlevelled.
Starving Doom Eater	The unit formation for boss battle is based on old Starving Doom Eater formation in Endless War. All units in this boss battle has better stats due to being overlevelled.
Nest	The unit formation for boss battle is exactly like 7-8EX. All units in this boss battle has significantly better stats due to being overlevelled.
Tracker	This boss battle can only be done during a Tracker event. The tracker's stats and its allies' stats depend on the floor you are in. For more information, see Tracker on Anyabot or Swaytwig.