The Underdog is a system introduced in the 1.4.1 patch of the game, it consists of a calculation to the skill level of a team. If a team is significantly lower in skill than the other team in the lobby - the less skilled team will be labeled as "Underdog". Winning a match as the underdog awards the player with achievements and prizes as an incentive.

It is important to note that while being underdog, losing a match does not add to your loss counter while still increasing your matches played counter.

Visual Indicators Edit

When a team is determined in the lobby as an underdog team, a label reading 'Underdog' will appear next to their airship's name in lobby - Easily identifying a team as an underdog. When in a running match, no underdog indicator will appear.

Skill Level Calculation Edit

The calculation of skill level is done by a ranking system based off of the Glicko 2 rating system and modified to fit the game. The ranking system uses MMR(Match-maker ranking) in order to rank each individual player and sums up the result for a collective team MMR. If the teams have more than 20% of difference between their team MMR values, the lower ranked team will be labeled as an underdog.

The MMR calculation is done as the lobby is setting up and does not change interactively after the match start. If changes are made to the teams in an already running match - the underdog status will not change.

It is important to note that AI crewmen have a base MMR of 0. Players who join an already running game mid-match, will not gain underdog related achievements from that particular match - to prevent the exploitation of the system.

Awards Edit

After achieving the related achievements for winning matches as an underdog, the player will be awarded with wearable cosmetics and titles:

Awarded for achieving the first Underdog Win achievement:

Tide Turner

Awarded for achieving the second Underdog Win achievement:


Awarded for achieving the third Underdog Win achievement:

Dark Horse
Elite Bicorn Hat(F)
Elite Bicorn Hat(M)

Awarded for achieving the fourth Underdog Win achievement:

Blessed Champion
Elite Top Hat(F)
Elite Top Hat(M)

Awarded for achieving the fifth Underdog Win achievement:

Favored Combatant

Awarded for achieving the sixth Underdog Win achievement:

Miracle Thief

Guns of Icarus Online Wikia Content
Airships GoldfishJunkerSquidGalleonSpirePyramidionMobulaShrikeMagnateJudgementCrusaderStormbreakerCorsair
Components ArmorHullBalloonEngines
Light Weapons Artemis Light Rocket LauncherAten Laser Mk. SBanshee Light Rocket CarouselBarking Dog Light CarronadeBeacon Flare GunDragon Tongue Light FlamethrowerEchidna Light Flak CannonHades Light CannonJavelin Light Harpoon GunMercury Field GunPhobos Mine LauncherScylla Double-Barreled MortarWhirlwind Light Gatling GunSeraph Tempest Missile Launcher Mk. S
Heavy Weapons Hellhound Heavy Twin CarronadeManticore Heavy HwachaLumberjack Heavy MortarTyphon Heavy Flak Cannon Mk. ITyphon Heavy Flak Cannon Mk. IIMinotaur Heavy CannonNemesis Heavy CarronadeRoaring Tiger Heavy Detonator Mk. S
Weapon Types
Particle Weapons‎
Dragon Tongue Light Flamethrower
Projectile Weapons‎
Echidna Light Flak CannonTyphon Heavy Flak CannonTyphon Heavy Flak Cannon Mk. II
Scylla Double-Barreled MortarLumberjack Heavy Mortar
Rocket Launchers
Artemis Light Rocket LauncherBanshee Light Rocket CarouselManticore Heavy Hwacha

Beacon Flare GunHades Light CannonJavelin Light Harpoon GunMercury Field GunPhobos Mine Launcher

Raycast Weapons‎
Barking Dog Light CarronadeHellhound Heavy Twin Carronade

Aten Laser Mk. SWhirlwind Light Gatling GunMinotaur Heavy Cannon

Classes PilotEngineerGunner
Piloting Equipment
Helm Tools
Chute VentDrogue ChuteHydrogen CanisterImpact BumpersKeroseneMoonshinePhoenix ClawTar Barrel
Sighting Tools
Range FinderSpyglass
Engineering Equipment
Repair Tools
Rubber MalletPipe WrenchShifting Spanner
Fire-Fighting Tools
Chemical SprayFire Extinguisher
Enhancement Tools
Dynabuff Industries Kit
Gunnery Equipment
Burst RoundsCharged RoundsGreased RoundsHeatsink ClipHeavy ClipIncendiary RoundsLesmok RoundsLochnagar Shot
Battle on the DunesCanyon AmbushDuel at DawnFight over FirnfeldNorthern FjordsParitan RumbleRed SepulcherWater Hazard
King of the Hill
Desert ScrapThe Labyrinth
Crazy King
Anglean RaidersKing of the Flayed HillsRaid on the Refinery
General Mechanics
Airship MovementFireStaminaWeather
Engineering Mechanics
Fire ImmunityRebuildingRepairing
Gunnery Mechanics
Damage TypesHit MarkersHit MechanicsProjectile Expansion
Achievements General AchievementsPilot AchievementsEngineer AchievementsGunner Achievements
Community ClanCommunity AmbassadorsUnderdogVeteran MatchesWanted
Weapons and Airships Data