Construction and Refinery Guide - IdleOn

One of the first skills you learn in World 3 of IdleOn is the Construction skill that allows you to use salts from the Refinery to build towers. This guide will outline all the different Construction Towers you can build and the materials you need to produce salts.

Refinery
Construction
Cogs
Construction Towers
Construction Boosts

As soon as you access World 3 Frostbite Tundra, you can unlock the Refinery and start producing salts. The Refinery will produce salts over time and you can then use these to build towers at the Construction table.

Refinery

The Refinery will automatically take materials from your Storage and use them to produce Salts. A Combustion cycle happens every 15 minutes, but this can be decreased with various boosts within IdleOn.

You can unlock various other salts in the Refinery. Salts are required for Construction Towers and also crafting equipment, upgrading stamps, Alchemy and a host of other areas in IdleOn.

Refinery UI

You'll find at the beginning you often run out of Fuel Components needed to make Salts, so it's ideal to start using the 3D Printer to produce the items you need automatically.

When you click the Refine button, the salts will be deposited into your Output inventory. You can also move them to your Storage for crafting or upgrading.

When a Salt's power reaches 100%, you can upgrade it. This will then allow you to produce more salts, but it will also consume more materials.

You can also set your Salt to Auto-Refine at a certain % to help keep a healthy supply of Salts automatically being produced.

Salt	Fuel Components	Unlock Cost
Redox Salts	Spore Cap Copper Ore	Default
Explosive Salts	Bullfrog Horn Forest Fibres Redox Salts	40 x Redox Salts
Spontaneity Salts	Pocket Sand Goldfish Fly Explosive Salts	150 x Explosive Salt
Dioxide Synthesis	Floof Ploof Dune Soul Scorpie Spontaneity Salts	300 x Spontaneity Salts
Purple Salt	Cracked Glass Bloach Sentient Cereal Mousey Dioxide Synthesis	500 x Dioxide Synthesis
Nullo Salt	Contact Lense Void Bar Wispy Lumber Flycicle Frigid Soul Purple Salt	750 x Purple Salt

Construction

Construction Table

The Construction Table is where you can build towers that offer various new mechanics to IdleOn.

There are three types of towers you can build:

World 3 Towers - These towers offer new features to World 3
Tower Defense - These towers are used in the Tower Defense mini-game/skill
Shrines - These shrines offer boosts whilst you fight mobs on maps

You can build up to 2 Towers at once by default, but you can unlock more tower building slots by purchasing the Tower Building Slots from the Gem Shop.

Each Tower has it's own maximum level; once you've build it once, you can then build it again to increase it's level. Each tower requires various components to be upgraded.

The rate at which a Tower is built is based on your Construction Build Rate.

Cogs

Cogs Tab

The Cogs tab at the Construction Table allows you to level up your Construction Skill passively. Cogs can give increase build rate, construction exp and Flaggy Rate.

When you open the Cogs Tab, you'll see a grid where you can place your Cogs. Cog grid slots can be unlocked by placing Flags on them. Once a Cog Slot reaches 100%, you can then place a Cog there. The aim is to unlock the entire grid so you can add more cogs and thus increase your building rate.

Cog Shelf

You can generate cogs by placing IdleOn characters on the Cog Shelf. You'll generate cogs over time and clicking the Collect button will add the Cog to your Cog Inventory (where it can then be placed on the grid).

You can also trash cogs you don't want to use.

Cogs can have the following stats:

Build Rate
Bonus Construction EXP
Flaggy Rate

Build rate increases your Tower Construction, Bonus Construction EXP increases your Construction Skill level (which in turn increases build rate) and Flaggy Rate increases how fast Flags unlock new Cog Slots on the grid.

You can unlock more powerful Cogs by increasing your Construction Level:

Nooby Cogs - Level 1
Decent Cogs - Level 15
Superb Cogs - Level 40
Ultimate Cogs - Level 70

Zen Cogs

You can also buy special Zen Cogs from the Gem Shop that have the best rates.

You can also place IdleOn Characters on the Cog Grid; it is best to place your Squire Class as they have the best Construction Rates available.

The best cogs to use are Bonus Construction EXP cogs as these will increase your Character's Construction Level, which will then boost your Build Rate much faster than any cog can perform.

Construction Towers

Tower	Description	Materials	Max Level
3D Printer	Using the new Star Talent (on the 2nd tab of Star Talents), you can collect samples to start printing resources!	Redox Salts	10
Talent Book Library	Relive your youth by checking out books, and further relive your youth by never returning them! Instead, use them to boost your talent max levels.	Redox Salts Froge	101
Death Note	Defeat TONS of monsters to boost your Multikill Rate for each world. Upgrading this tower also boosts your base Multikill Bonus in all worlds.	Explosive Salts Forest Soul	51
Salt Lick	Spend Refinery Salts and other World 3 Resources in return for bonuses from the hungry blobulytes!	Explosive Salts Crabbo	10
Chest Space	Just gives more Storage Chest slots, straight up. I gotchu dawg, yeh.	Explosive Salts Oak Logs	25
Cost Cruncher	Reduces the resource costs of upgrading buildings. Doesn't affect 'building' phase cost.	Spontaneity Salts Fruitfly	60
Trapper Drone	Remotely deploy AND collect traps to and from any discovered critter location! Collect-all is based on Hunter's Eagle Eye Talent.	Spontaneity Salts Crescent Scorpie	15
Automation Arm	Automate some of the more tedious actions with the flip of a switch! Let the robots do the dirty work!	Spontaneity Salts Cryosnake Skin	5
Atom Collider	Accelerate enough material to high speeds, and you can create the first physical atoms in this pixellated world!	Nullo Salt Shattered Skull	200

Tower Defense

Tower Defense is a mini-game you can play using your Worship skill. You can build and upgrade the following towers to make the game more easier.

Tower	Description	Materials	Max Level
Pulse Mage	Zaps a single nearby monster. Has fast speed, and low damage.	Redox Salts	52
Fireball Lobber	Lobs exploding fireballs. Has medium speed, and medium damage.	Redox Salts Froge	52
Boulder Roller	Rolls a boulder forward. Has slow speed, and medium damage, but reliably hits multiple enemies.	Explosive Salts Iron Bar	52
Frozen Malone	Casts a wave of freezing snow. Has slow speed, but can stack it's effect with other Freeze Towers.	Explosive Salts Bleach Logs	52
Stormcaller	Smites enemies with lightning. Has super slow speed, but high damage.	Spontaneity Salts Crescent Scorpie	52
Party Starter	Has no function other than its Trait Boosts.	Spontaneity Salts Flycicle	52
Kraken Cosplayer	Summons eyeball defenders. Has slow speed, and just keeps monsters away.	Dioxide Synthesis Dementia Ore	52
Poisonic Elder	Poisons enemies. Has slow speed but great AoE for hitting large crowds of mobs.	Purple Salt Purple Mush Cap	52
Voidinator	Casts a wave of null and void, removing enemy colors.	Nullo Salt Suggma Ashes	52

Shrines

Shrines can be placed on any map using the Shrine Architect talent in Special Star Talent tab.

Shrines will level up the longer you train on a map and give increased bonuses the higher the level they are. You can improve the level up rate by upgrading the towers in Construction.

Tower	Description	Materials	Max Level
Woodular Shrine	This shrine increases the Total Damage of all characters on the same map. Level it up by claiming AFK Gains on the same map.	Redox Salts	100
Isaccian Shrine	This shrine increases the Max HP and Total Defense of characters on the same map.	Redox Salts Forest Soul	100
Crystal Shrine	This shrine increases the Shrine Level Up Rate for all other shrines on the same map.	Explosive Salts Gold Bar	100
Pantheon Shrine	This shrine increases the Carry Capacity of all characters on the same map.	Explosive Salts Jungle Logs	100
Clover Shrine	This shrine increases the Drop Rate of all characters on the same map.	Spontaneity Salts Rooted Soul	100
Summereading Shrine	This shrine increases all EXP gain for all characters on the same map.	Spontaneity Salts Flycicle	100
Crescent Shrine	This shrine increases Crystal and Giant Spawn chance, and Active EXP gain, of all characters on the same map.	Dioxide Synthesis Void Ore	100
Undead Shrine	This shrine increases the Respawn Rate of all monsters on the same map.	Purple Salt Wispy Lumber	100
Primordial Shrine	This shrine increases the AFK Gain Rate of all characters on the same map.	Nullo Salt Black Lense	100

Construction Boosts

You can boost your Construction and Refinery rates with the following boosts in IdleOn:

Name	Boost	From	Notes
Seesaw Statue	% Construction EXP	Statue Man	Access from World 1
Gear Stamp	% Building Speed	Stamps	Access from World 1
Saw Stamp	% Construction EXP	Stamps	Access from World 1
Refinery Stamp	% Faster Refinery Cycles	Stamps
Taxidermied Cog Pouches	+4 Cog Inventory slots.	Stamp Bribes	Access from World 1
	Refinery Speed	Arcade	Access from World 1
	+% Construction Build	Arcade	Access from World 1
CALL ME BOB	+% Construction EXP Gain. Also gives +50% Bug-Fixing speed if your username is LavaFlame2.	Alchemy	Access from World 2
CARPENTER	+% Build Speed per Construction Level. Not affected by 'Warriors Rule' bubble.	Alchemy	Access from World 2
RED MALT	+% Refinery Cycle Speed. I just want to see you squirm a bit more as you decide where to spend your precious salts hahahaha!!	Alchemy Vials	Access from World 2
VISIBLE INK	+% Construction Exp gain.	Alchemy Vials	Access from World 2
SHINYFIN STEW	+% Construction Build Rate, so you can hit all those boosted max levels you keep unlocking	Alchemy Vials	Access from World 2
TURTLE TISANE	+% Artifact find chance, Sigil SPD, Cooking SPD, and Construction Build rate. All MULTIPLICATIVE! A very special vial indeed...	Alchemy Vials	Access from World 2
Pipe Gauge	Increases the speed of refinery cycles by +%	Alchemy Sigils	Access from World 2
Construction Container	% Base Build Rate, % Shrine Charge Rate, % Construction EXP	Post Office	Access from World 2
	Boosts Refinery Cycle Speed by +50%	Bonus Ballot	Access from World 2
	Boosts Construction Build Rate and Construction EXP gain by +40%	Bonus Ballot	Access from World 2
Construction Obols	+%Build Speed	Obols	Access from World 2
Refinery Cycle	Complete 1 Refinery Cycle automatically	Killroy's Slaughterhouse	Access from World 2
Zen Cogs	These premium cogs are the best in the same! Yin Cogs have the best base stats! Yang Cogs have the best Surround Effects! Each purchase gives 1 of each!	Gem Shop	Access from World 3
Cog Inventory Space	Each purchase gives you +4 cog inventory spaces, to store all your cogs in!	Gem Shop	Access from World 3
Tower Building Slots	Unlocks +1 more slot to build towers in! Remember, each slot builds at your FULL build rate, so this upgrade helps massively to upgrade all your towers to max level!	Gem Shop	Access from World 3
Fluorescent Flaggies	Makes your flaggies unlock spaces faster, opening up your board for more cogs! Each purchase boosts Flaggy rate by +50%	Gem Shop	Access from World 3
Buildie Sheepie	+% Construction SPD per POW 10 Sheepie Kills.	The Upgrade Vault	Access from World 1
The Salt Lick	+% Refinery Speed for all cycle types. In other words, cycles take less time.	The Salt Lick	Access from World 3