This Epic Skill increases damage dealt by heroes by 2% per level. This can especially prove useful when trying to kill enemy unit with their active or passive abilities.

This Rare Skill reduces the cost of Boost Conversion by 5% or 1 Boost per level. This allows the exchange ratio to increase from 20 Blue / Red Boosts for 1 Red / Gold Boost to 10 to 1.

This Common Skill decreases the damage received by all buildings by 2% per level. This is especially useful for defensive buildings which usually take the most damage from enemy attacks. It also enables more buildings to survive the attack of a Space System or Nuclear Launcher as the damage dealt by them decreases with distance from the attack point. Furthermore it helps you stay safe(r) from building snipes from Vertex or Hawks.

This Common Skill increases the construction speed of all buildings by 2% per level. This makes it especially valuable for getting specific production buildings like the Shipyard on water maps quicker. It can also help you to get last-minute defensive buildings built just in time for the enemy attack. This bonus stacks with the construction speed upgrade of the Construction Yard.

This Rare Skill increases the amount of Credits gained from completing Contracts by 10% per level, but it does not increase the amount of War Points gained. This means this skill is useful to permanently increase your income.

This Common Skill increases the duration of Deployment Mode by 2% per level. This Skill stacks with the duration increasing upgrade in the HQ, making it even easier to build mid-tier technology while still in Deployment Mode.

This Common Skill increases the attack bonus given by Flags by 10% per level which makes holding flags in Domination, Maneuver or certain Tournaments a lot easier. This bonus is multiplicative. This means a 10% bonus on 5% attack bonus would mean 5% * 1.10 = 5.5% bonus attack instead of 5% + 10% = 15%.

This Common Skill decreases the cooldown of the Free Chest which initially has a cooldown of 4 hours by 3% per level. This increased frequency of free chests can, depending on how often you login every day, increase your income.

This Common Skill increases the damage dealt by infantry units by 2% per level. This is especially useful for infantry rushes and container gathering.

This Rare Skill decreases the cooldown of producing a hero after it gets defeated. This is especially helpful when the army composition of a player is centered on supporting a hero unit.

This Common Skill increases the resources received from Containers collected during a battle by 10% per level. These extra resources allow you to directly go for a higher tier of technology at the beginning of a battle.

This Rare Skill increases the amount of Credits gained from defeating the AI in Skirmish Mode by 10% per level, but it does not increase the amount of War Points gained. This means this skill is useful to permanently increase your income.

This Rare Skill increases the amount of Credits gained from winning Tournament Battles by 10% per level, but it does not increase the amount of War Points and Skill Cards gained. This means this skill is useful to permanently increase your income.

This Epic Skill decreases the Credit cost of all upgrades by 2% per level therefore allowing a player to spend less on an upgrade. This skill is an investment into a better long-term economy. Note that upgrades does not refer to other skill card upgrades and only to those found in the upgrade menu.

This Rare Skill increases the maximum Uranium that a player can store. This helps with providing enough Uranium to last multiple battles in a row.

This Rare Skill increases the amount of War Points you receive from all sources by 3% per level which makes reaching the Secret Chest of the War Point Chests easier.

This Epic Skill increases the amount of Credits, but not War Points, received from World War Battles which also includes 2v2 games by 5% per level. This stacks with other Bonuses like the ones a player gets by having Premium.