Skill Tree

The Skill Tree is a permanent upgrade tree bought with coins and Ocean Cash. It was added on July 14, 2026. It now has 164 skills in five categories: Military, Residency, Economy, Crew (added in the October 3 update) and the new Gear category from the Workshop update. Skills never expire and stay with you forever.

How it works

• Open the tree from the HUD. The home screen shows the five categories. Tap a category to open its tree.
• Skills of the same kind are grouped in a sub tree (for example Box, Trader, Air Force or Trucks). Tap the group to open it. The skills inside a sub tree are bought in order.
• Every skill needs the skill before it. As soon as you buy the first skill of a sub tree, the skills that grow from that sub tree open up. You do not have to finish the whole sub tree first.
• The Back button takes you up one level: from a sub tree to its category, and from a category to the home screen. On the home screen it says Exit.
• Skills of the same kind stack. Two "10% more rent" skills multiply together.
• Ocean-themed skills cost Ocean Cash instead of coins.
• The Scientist skill makes every other skill 5% cheaper. The costs below are the full prices.
• Skills work right away. Ship-speed skills even speed up ships already at sea.
• Some skills are higher levels of the same thing: the Box sizes, the Collector trucks and the Merchant trucks. If you buy a higher level first, you get the lower levels you skipped for free. For example, buying Container Truck right after Flatbed Truck also gives you Box Van, Tow Truck and Dump Truck.

Military (40 skills)

Make your troops stronger, give better orders, and grow your air force and fleet.

Troops

Icon	Skill	Group	Cost	What it does	Needs
	Swords I	Swords	250,000 coins	Your troops deal 10% more damage.	Nothing
	Swords II	Swords	1,500,000 coins	Your troops deal 10% more damage.	Swords I
	Warblades	Swords	12,000,000 coins	Your troops deal 15% more damage.	Swords II
	Armor I	Armor	2,000,000 coins	Your troops have 10% more health.	Swords I
	Armor II	Armor	5,000,000 coins	Your troops have 10% more health.	Armor I
	Plating	Armor	12,000,000 coins	Your troops have 15% more health.	Armor II
	Ironhide	Armor	20,000,000 coins	Your troops take 10% less damage.	Plating
	Veteran		60,000,000 coins	Troops hit harder for every enemy your army defeats.	Armor I
	Bastion		500,000 Ocean Cash	Your flags are 50% harder to capture.	Veteran
	Drill	Training	25,000,000 coins	Troops train 15% faster.	Swords I
	Twins	Training	45,000,000 coins	10% chance to train two troops at once!	Drill
	Ambush		80,000,000 coins	First strike on a new enemy deals 50% more damage.	Drill
	Longshot		900,000 Ocean Cash	Your troops attack from further away.	Ambush

Command

Icon	Skill	Group	Cost	What it does	Needs
	Ally	Alliance	15,000 coins	Unlock alliances. Team up with other countries!	Nothing
	United	Alliance	2,000,000 coins	Troops deal 10% more damage while you have an ally.	Ally
	Pact	Alliance	8,000,000 coins	Army limit +1 for each ally. Up to 2.	United
	Tribute		15,000,000 coins	Every flag you hold pays 2 coins each second.	Ally
	Commander		200,000,000,000 coins	Send troops to any flag, no flag next to it needed!	Tribute
	Officers	Orders	500,000 coins	Send half your army to a flag at once. Use Send Half!	Ally
	Signals	Orders	3,000,000 coins	Send soldiers to a flag one at a time. Use Send 1!	Officers
	Speed I	Speed	250,000 coins	Your troops march 5% faster.	Ally
	Speed II	Speed	1,500,000 coins	Your troops march 5% faster.	Speed I
	Army I	Army	4,000,000 coins	Raise your army limit by 1.	Speed I
	Army II	Army	10,000,000 coins	Raise your army limit by 1.	Army I
	Legion	Army	30,000,000 coins	Raise your army limit by 3.	Army II
	Medic		12,000,000 coins	Your troops slowly heal during battle.	Army I
	Warlord		45,000,000 coins	Troops deal 15% more damage while you hold the center flag.	Army I
	Wingmen	Air Force	25,000,000 coins	You can have 2 more Biplanes flying.	Warlord
	Jet Fuel	Air Force	60,000,000 coins	All your planes fly 25% faster.	Wingmen
	Skyshield	Air Force	120,000,000 coins	All your planes have 40% more health.	Jet Fuel
	Squadron	Air Force	250,000,000 coins	You can have 1 more F14 flying.	Skyshield
	Big Bombs	Air Force	500,000,000 coins	B2 bombs blast 35% wider.	Squadron
	Quick Reload	Air Force	900,000,000 coins	B2 bombers drop bombs 25% faster.	Big Bombs
	Bomb Bay	Air Force	2,000,000,000 coins	You can have 1 more B2 flying.	Quick Reload

Air & Sea

Icon	Skill	Group	Cost	What it does	Needs
	Fleet	Fleet	250,000 Ocean Cash	Raise your ocean fleet limit by 1.	Nothing
	Armada	Fleet	600,000 Ocean Cash	Raise your ocean fleet limit by 2.	Fleet
	Currents I	Currents	300,000 Ocean Cash	Your ships sail 15% faster.	Fleet
	Currents II	Currents	500,000 Ocean Cash	Your ships sail 15% faster.	Currents I
	Trade Winds	Currents	700,000 Ocean Cash	Your ships sail 20% faster.	Currents II
	Storm Sails	Currents	1,200,000 Ocean Cash	Your ships sail 25% faster.	Trade Winds

Residency (20 skills)

Earn more rent, build faster and keep thieves away.

Rent

Icon	Skill	Group	Cost	What it does	Needs
	Rent I	Rent	25,000 coins	Earn 10% more rent from your citizens.	Nothing
	Rent II	Rent	300,000 coins	Earn 10% more rent from your citizens.	Rent I
	Landlord	Rent	1,500,000 coins	Earn 15% more rent from your citizens.	Rent II
	Estates	Rent	6,000,000 coins	Earn 15% more rent from your citizens.	Landlord
	Empire	Rent	15,000,000 coins	Earn 20% more rent from your citizens.	Estates
	Dreamer	Offline	5,000,000 coins	10% chance to DOUBLE your offline earnings!	Rent I
	Twilight	Offline	8,000,000 coins	Earn 25% more rent while away.	Dreamer
	Nightowl	Offline	300,000 Ocean Cash	Earn 50% more rent while away.	Twilight
	Moonlight	Offline	400,000 Ocean Cash	Earn 75% more rent while away.	Nightowl

The "while away" rent skills (Twilight, Nightowl, Moonlight) do not stack: the best one you own applies.

Builders

Icon	Skill	Group	Cost	What it does	Needs
	Builder I	Builder	200,000 coins	Buildings finish 8% faster.	Nothing
	Builder II	Builder	1,000,000 coins	Buildings finish 10% faster.	Builder I
	Crane	Builder	6,000,000 coins	Buildings finish 12% faster.	Builder II
	Machines	Builder	20,000,000 coins	Buildings finish 15% faster.	Crane
	Foreman I	Foreman	30,000,000 coins	One more Builder's Cabin can speed up builds.	Builder I
	Foreman II	Foreman	350,000 Ocean Cash	One more Builder's Cabin can speed up builds.	Foreman I
	Exotics		1,000,000 Ocean Cash	Exotic buildings cost 50% less!	Foreman I

Safety

Icon	Skill	Group	Cost	What it does	Needs
	Vault	Thief Guard	2,500,000 coins	Thieves can only steal half as much from you.	Nothing
	Guard Dog	Thief Guard	4,000,000 coins	Thieves run 25% slower on your plot.	Vault
	Watchful	Thief Guard	5,000,000 coins	Your knights spot thieves from much further away.	Guard Dog
	Refund		12,000,000 coins	Sell buildings back for up to 25% more coins.	Vault

Economy (32 skills)

Sell for more, pay less in the shop, and store more.

Selling

Icon	Skill	Group	Cost	What it does	Needs
	Trader I	Trader	25,000 coins	Sell items for 10% more coins.	Nothing
	Trader II	Trader	300,000 coins	Sell items for 10% more coins.	Trader I
	Trader III	Trader	1,000,000 coins	Sell items for 15% more coins.	Trader II
	Tycoon	Trader	5,000,000 coins	Sell items for 20% more coins.	Trader III
	Lucky		30,000,000 coins	Every sale has a 5% chance to pay DOUBLE!	Trader I
	Midas		10,000,000 coins	Your troops earn coins for every kill!	Lucky
	Tides I	Tides	150,000 Ocean Cash	Earn 10% more Ocean Cash.	Trader I
	Tides II	Tides	350,000 Ocean Cash	Earn 15% more Ocean Cash.	Tides I
	Poseidon	Tides	750,000 Ocean Cash	Earn 25% more Ocean Cash.	Tides II

Shop

Icon	Skill	Group	Cost	What it does	Needs
	Shop I	Shop	100,000 coins	All building prices reduced by 5%.	Nothing
	Shop II	Shop	2,500,000 coins	All building prices reduced by 5%.	Shop I
	Shop III	Shop	15,000,000 coins	All building prices reduced by 8%.	Shop II
	Shop IV	Shop	50,000,000 coins	All building prices reduced by 10%.	Shop III
	Buy All	Shop	100,000,000 coins	Adds a Buy All button to every shop!	Shop IV
	Scientist		3,000,000 coins	Every other skill is 5% cheaper.	Shop I
	Super Rods		6,000,000 coins	Your Lightning Rods last 5 strikes instead of 3.	Scientist

Storage

Icon	Skill	Group	Cost	What it does	Needs
	Box I	Box	250,000 coins	Your storage box holds 200 items.	Nothing
	Box II	Box	2,500,000 coins	Your storage box holds 1000 items.	Box I
	Box III	Big Box	6,000,000 coins	Your storage box holds 2500 items.	Box I
	Box IV	Big Box	14,000,000 coins	Your storage box holds 5000 items.	Box III
	Gifting	Gifting	5,000,000 coins	Gift items up to Rare to a friend. They need Gifting too!	Box III
	Gifting II	Gifting	455,000,000 coins	Gift items up to Legendary. Your friend needs Gifting II too!	Gifting
	Gifting III	Gifting	5,005,000,000 coins	Gift items up to Mythic. Your friend needs Gifting III too!	Gifting II
	Gifting IV	Gifting	80,000,000,000 coins	Gift even Exotic items! Your friend needs Gifting IV too!	Gifting III
	Storage I	Storage	3,000,000 coins	Your buildings store 25% more items.	Box I
	Storage II	Storage	8,000,000 coins	Your buildings store 25% more items.	Storage I
	Warehouse	Storage	25,000,000 coins	Your buildings store 50% more items.	Storage II
	Farmer	Farming	50,000,000 coins	Your farms grow food 30% faster.	Storage I
	Green Thumb	Farming	75,000,000 coins	Your farms grow food 10% faster.	Farmer
	Miner	Farming	100,000,000 coins	Your mines dig 35% faster.	Green Thumb
	Depot	Deep Storage	400,000 Ocean Cash	Your buildings store 100% more items.	Storage I
	Deep Pockets	Deep Storage	600,000 Ocean Cash	Your buildings store 25% more items.	Depot

Crew (37 skills)

New in the October 3 update. Crew skills upgrade your Collector and Merchant trucks, your Thieves and your Knights. A truck skill changes every Collector or Merchant you own at once. The truck sizes and speeds are on the Hireables page.

Collectors

Icon	Skill	Group	Cost	What it does	Needs
	Flatbed Truck	Trucks	25,000 coins	Your Collectors become Flatbed Trucks. They carry 10!	Nothing
	Box Van	Trucks	60,000 coins	Your Collectors become Box Vans. They carry 15!	Flatbed Truck
	Tow Truck	Trucks	350,000 coins	Your Collectors become Tow Trucks. They carry 25!	Box Van
	Dump Truck	Trucks	1,500,000 coins	Your Collectors become Dump Trucks. They carry 50!	Tow Truck
	Container Truck	Big Trucks	8,000,000 coins	Your Collectors become Container Trucks. They carry 70!	Flatbed Truck
	Big Rig	Big Trucks	30,000,000 coins	Your Collectors become Big Rigs. They carry 90!	Container Truck
	Monster Hauler	Big Trucks	120,000,000 coins	Your Collectors become Monster Haulers. They carry 110!	Big Rig
	Hover Hauler	Big Trucks	500,000,000 coins	Your Collectors become Hover Haulers. They carry 130!	Monster Hauler
	Golden Hauler	Big Trucks	2,000,000,000 coins	Your Collectors become Golden Haulers. They carry 150!	Hover Hauler
	Engine I	Engine	400,000 coins	Your Collectors and Merchants drive 15% faster.	Flatbed Truck
	Engine II	Engine	1,500,000 coins	Your Collectors and Merchants drive 15% faster.	Engine I
	Cargo I	Cargo	4,000,000 coins	Your Collectors carry 25% more.	Engine I
	Cargo II	Cargo	9,000,000 coins	Your Collectors carry 25% more.	Cargo I
	Garage I		250,000,000 coins	You can place 1 more Collector.	Cargo I
	Loot I	Thieves	5,000,000 coins	Your Thief brings home 1 minute of your coins too!	Container Truck
	Sneaky I	Thieves	15,000,000 coins	Your Thieves run 15% faster.	Loot I
	Quick Rest	Thieves	40,000,000 coins	Your Thief rests only 30 seconds between trips.	Sneaky I
	Loot II	Thieves	100,000,000 coins	Your Thief brings home 2 minutes of your coins too!	Quick Rest
	Sneaky II	Thieves	250,000,000 coins	Your Thieves run 15% faster.	Loot II
	Loot III	Thieves	600,000,000 coins	Your Thief brings home 3 minutes of your coins too!	Sneaky II
	Loot IV	Thieves	2,000,000,000 coins	Your Thief brings home 5 minutes of your coins too!	Loot III

Merchants

Icon	Skill	Group	Cost	What it does	Needs
	Cash Van	Money Trucks	2,500,000 coins	Your Merchants become Cash Vans. They sell for 1.2x!	Nothing
	Armored Truck	Money Trucks	8,000,000 coins	Your Merchants become Armored Trucks. They sell for 1.3x!	Cash Van
	Armored Semi	Money Trucks	20,000,000 coins	Your Merchants become Armored Semis. They sell for 1.5x!	Armored Truck
	Haggle I	Haggle	20,000,000 coins	Merchants pay you 5% more.	Cash Van
	Haggle II	Haggle	100,000,000 coins	Merchants pay you 10% more.	Haggle I
	Vault Truck	Big Cash	150,000,000 coins	Your Merchants become Gold Vault Trucks. They sell for 1.7x!	Cash Van
	Cash Copter	Big Cash	1,000,000,000 coins	Your Merchants become Cash Copters. They sell for 1.85x!	Vault Truck
	Recruiter		20,000,000 coins	Hiring workers costs 15% less.	Cash Van
	Garage II		400,000,000 coins	You can place 1 more Merchant.	Haggle I
	Knight Camp I	Knights	5,000,000 coins	You can place 1 more Knight.	Recruiter
	Fast Knights I	Knights	15,000,000 coins	Your Knights run 20% faster.	Knight Camp I
	Eagle Eye	Knights	40,000,000 coins	Your Knights spot Thieves from further away.	Fast Knights I
	Reward I	Knights	100,000,000 coins	When a Knight catches a Thief, get up to 1 minute of your coins!	Eagle Eye
	Fast Knights II	Knights	250,000,000 coins	Your Knights run 20% faster.	Reward I
	Reward II	Knights	600,000,000 coins	When a Knight catches a Thief, get up to 3 minutes of your coins!	Fast Knights II
	Knight Camp II	Knights	2,000,000,000 coins	You can place 1 more Knight.	Reward II

Gear (35 skills)

New in the Workshop update. Gear skills level up your Gear. A gear skill changes every copy of that gear you own at once, and gives it a new look. The numbers for every level are on the Gear page. The first skill of each part (Iron Hammer, Iron Scythe and Iron Horn) needs nothing.

Build

Level up the Build Hammer and get free hammers.

Icon	Skill	Group	Cost	What it does	Needs
	Iron Hammer	Hammer	500,000 coins	Build Hammers skip 55% of the time left.	Nothing
	Steel Hammer	Hammer	5,000,000 coins	Build Hammers skip 60% of the time left.	Iron Hammer
	Titan Hammer	Hammer	50,000,000 coins	Build Hammers skip 65% of the time left.	Steel Hammer
	Diamond Hammer	Hammer	500,000,000 coins	Build Hammers skip 70% of the time left!	Titan Hammer
	Workbench I	Workbench	2,000,000 coins	Get a free Build Hammer every hour, up to 1.	Iron Hammer
	Workbench II	Workbench	20,000,000 coins	Get a free Build Hammer every 45 minutes, up to 2.	Workbench I
	Workbench III	Workbench	200,000,000 coins	Get a free Build Hammer every 30 minutes, up to 3.	Workbench II
	Lucky Swing I	Lucky Swing	10,000,000 coins	Build Hammers have a 5% chance to finish a build!	Iron Hammer
	Lucky Swing II	Lucky Swing	100,000,000 coins	Build Hammers have a 10% chance to finish a build!	Lucky Swing I

Grow

Level up the Scythe, Buckets and Lightning Rods, and brew better potions.

Icon	Skill	Group	Cost	What it does	Needs
	Iron Scythe	Scythe	250,000 coins	Your Scythe collects from 25 studs away.	Nothing
	Steel Scythe	Scythe	2,500,000 coins	Your Scythe collects from 35 studs away.	Iron Scythe
	Titan Scythe	Scythe	25,000,000 coins	Your Scythe collects from 45 studs away.	Steel Scythe
	Diamond Scythe	Scythe	250,000,000 coins	Your Scythe collects from 60 studs away!	Titan Scythe
	Brewing I	Brewing	1,000,000 coins	Your potions last 50% longer.	Iron Scythe
	Brewing II	Brewing	10,000,000 coins	Drink Strength or Recruit again to add more time. No waiting!	Brewing I
	Brewing III	Brewing	100,000,000 coins	Get a free Worker Potion every hour, up to 2.	Brewing II
	Brewing IV	Brewing	1,000,000,000 coins	Your potions last 2x as long in total!	Brewing III
	Iron Bucket	Rain Bucket	1,000,000 coins	Your Buckets boost 35% and reach 20 studs.	Iron Scythe
	Steel Bucket	Rain Bucket	10,000,000 coins	Your Buckets boost 50% and reach 25 studs.	Iron Bucket
	Gold Bucket	Rain Bucket	100,000,000 coins	Your Buckets boost 75% and reach 30 studs!	Steel Bucket
	Iron Rod	Storm Rod	1,000,000 coins	Your Lightning Rods last 10 strikes.	Iron Bucket
	Steel Rod	Storm Rod	10,000,000 coins	Your Lightning Rods never break!	Iron Rod
	Storm Rod	Storm Rod	100,000,000 coins	Your Lightning Rods catch bolts in the rain too!	Steel Rod

Battle

Level up the War Horn, Strength Potions, the Speed Coil and the Flying Carpet.

Icon	Skill	Group	Cost	What it does	Needs
	Iron Horn	War Horn	500,000 coins	Your War Horn makes troops hit 35% harder for 12 seconds.	Nothing
	Steel Horn	War Horn	5,000,000 coins	Your War Horn makes troops hit 50% harder for 15 seconds.	Iron Horn
	Titan Horn	War Horn	50,000,000 coins	Your War Horn makes troops hit 75% harder for 18 seconds.	Steel Horn
	Diamond Horn	War Horn	500,000,000 coins	Your War Horn makes troops hit 2x harder for 20 seconds!	Titan Horn
	Strength II	Strength Brew	2,000,000 coins	Strength Potions give +25% damage.	Iron Horn
	Strength III	Strength Brew	20,000,000 coins	Strength Potions give +35% damage.	Strength II
	Strength IV	Strength Brew	200,000,000 coins	Strength Potions give +50% damage!	Strength III
	Blue Coil	Speed Coil	500,000 coins	Your Speed Coil gives +40 speed.	Iron Horn
	Gold Coil	Speed Coil	5,000,000 coins	Your Speed Coil gives +48 speed.	Blue Coil
	Rainbow Coil	Speed Coil	50,000,000 coins	Your Speed Coil gives +56 speed!	Gold Coil
	Blue Carpet	Carpet	10,000,000 coins	Your Flying Carpet flies 20% faster.	Blue Coil
	Gold Carpet	Carpet	100,000,000 coins	Your Flying Carpet flies 40% faster!	Blue Carpet

Moved and removed skills

• The old Runner I and II skills are now Engine I and II in Crew, and they speed up Merchants too. Satchel I and II are now Cargo I and II. The old Merchant skill is now Trader III. Owners kept them.
• Sea Strike (planes could attack ships) was removed in the October 3 update, because now only Sea Jets fly between land and sea. Everyone who owned it got 750,000 Ocean Cash back once, with a message when they joined.