Marathon Chip Mods
Utility effects - economy, ammo, healing, and situational perks. Every chip mod in Marathon — effects, rarity tiers, and credit cost, straight from the game data. Many come in a rarity ladder: the same mod gets stronger as the rarity rises.
45 MODS69 ROWS
Afterburner
EnhancedSliding with this weapon reloads a portion of your magazine and increases stability and accuracy by a moderate amount. Ballistic weapons reload from reserves. Volt weapons reload a smaller portion69cr
Alarmist Chip
SuperiorAfter aiming down sights for a brief duration, projectile impacts create a scan-drone alert.
Alternating Current
DeluxeRestore a significant amount of health or shields when damaging a target affected by an effect.207cr
Background Process2 RARITIES
StandardWhen this weapon is stowed, it automatically reloads after a significant period of time.23cr
EnhancedWhen this weapon is stowed, it automatically reloads after a significant period of time.23cr
Battle Runner
EnhancedEliminations with this weapon grant increased sprint speed for a moderate duration.69cr
Bits Per Second
EnhancedRapid precision hits temporarily increase stability and reload speed by a moderate amount.69cr
Blue Blood
SuperiorDowning a hostile Runner restores health.621cr
Bounty Hunter3 RARITIES
StandardEliminating UESC pays you a few credits.23cr
EnhancedEliminating UESC pays you a small amount of credits.69cr
DeluxeEliminating UESC pays you a considerable amount of credits.207cr
Brain Freeze Chip
SuperiorPrecision downs and kills with this weapon create a small explosion that spreads Frost to nearby hostiles.
Buffer Overflow Chip
SuperiorPrecision downs and kills with this weapon grant a stacking increase to reload speed. Stacks and benefit scale with rarity tier.
Chaos Theory2 RARITIES
StandardDealing a significant amount of sustained damage causes hostiles to drop a random item.23cr
EnhancedDealing a moderate amount of sustained damage causes hostiles to drop random ammo.69cr
Circuit Tracers
SuperiorEliminations with this weapon reload the magazine by a massive amount.621cr
Cloudborn2 RARITIES
StandardWhile in smoke, this weapon has increased stability, accuracy, handling, and movement speed.23cr
EnhancedWhile in smoke, this weapon has increased stability, accuracy, handling, and movement speed.23cr
Endless Runner
StandardEffect not documented yet.23cr
Exterminator Chip
SuperiorThis weapon deals increased damage against the terrors of [REDACTED] (the new Dire Marsh (Night) threat).
Eyes on Fire2 RARITIES
StandardQuickly after deactivation of a tactical or trait ability, eliminating a hostile grants a moderate effect.23cr
EnhancedAfter deactivation of a tactical or trait ability, eliminating a hostile within a brief window grants a moderate amount of tactical and trait ability energy.
Five Finger Discount
EnhancedEliminating UESC or downing Runners with a melee or knife attack partially reloads this weapon.69cr
Flash Draw Chip
SuperiorRestore health or shields when damaging a target affected by EMP.540cr
Ghillie Suit Chip
SuperiorAfter crouching for a short duration, this weapon has increased stability, range, and accuracy.
Heatsink2 RARITIES
StandardDealing sustained damage with this weapon reduces your generated heat by a small amount.23cr
EnhancedReduces weapon heat buildup rate, delaying overheat on sustained fire.60cr
Insomniac2 RARITIES
EnhancedSustained fire gradually increases damage output over several seconds.
SuperiorWhile under the effects of Energy Amp, eliminating hostiles with this weapon extends the effect.621cr
Insurance Plan2 RARITIES
StandardWhile under the effects of a Mechanic's Kit or OS Debug, defeating a hostile significantly aids you.23cr
DeluxeWhile under the effects of a Mechanic's Kit or OS Debug, defeating a hostile significantly aids you.207cr
Insurrection3 RARITIES
StandardThis weapon deals slightly increased damage against UESC forces.23cr
DeluxeThis weapon deals considerably increased damage against UESC forces.23cr
SuperiorThe weapon deals significantly increased damage against UESC forces.621cr
Keen Scout Chip
EnhancedSlightly increases target detection range and enemy highlight duration.60cr
Keyboard Warrior
EnhancedEliminations grant stacks of bonus accuracy and range for a moderate duration.69cr
Last Resort2 RARITIES
EnhancedWhile you are Overheated, non-precision damage is increased by a moderate amount.69cr
SuperiorWhile you are Overheated, non-precision damage is increased by a massive amount.621cr
Motionsense Chip
EnhancedAlerts you when enemies are moving nearby, briefly highlighting their position.60cr
Opportunist
StandardWhile shields are depleted, shots on hostile targets have a small chance to return ammo to the magazine.23cr
Optimal Prime2 RARITIES
StandardDealing damage quickly after your prime ability ends grants you the effects of Energy Amp.23cr
EnhancedDealing damage quickly after your prime ability ends grants you the effects of Energy Amp.69cr
Ornithologist3 RARITIES
StandardAfter aiming down sights for a brief duration, projectile impacts create a distracting bird call.23cr
EnhancedAfter aiming down sights for a brief duration, projectile impacts create a distracting bird call.69cr
SuperiorAfter aiming down sights for a brief duration, projectile impacts from this weapon create a distracting bird call.621cr
Punishment
SuperiorThis weapon deals significantly increased damage against Sph't combatants.621cr
Refocuser Chip
SuperiorTaking explosive damage grants this weapon increased ADS speed and aim assist.
Reverse Card
SuperiorWhile below half health, breaking the shield of a hostile Runner restores your shields.621cr
Rocket Start2 RARITIES
StandardEliminating a hostile shortly after sprinting grants you the effects of Cardio Kick for a short time.23cr
SuperiorEliminating a hostile shortly after sprinting grants you the affects of Cardio Kick for a long duration.621cr
Rorschach Test
SuperiorWhile surrounded by hostiles, reloading this weapon overflows the magazine, with improved overflow for ballistic weapons. Additionally, grants a bonus to stability and aim assist for a short duration after activation.621cr
Scrapyard Chip
SuperiorDefeating hostiles with this weapon has a chance to spawn depleted health items or standard materials. Chance increases with rarity tier.
See Ya
SuperiorReloading this weapon when the magazine is empty causes you to become briefly invisible.621cr
Slip Protocol2 RARITIES
StandardWhile moving, this weapon's stability and accuracy increased.12cr
SuperiorWhile moving, this weapon's stability and accuracy increase by a massive amount.621cr
Stack Overflow3 RARITIES
StandardReloading this weapon when the magazine is empty overflows the magazine by a small amount.35cr
DeluxeEach consecutive hit on the same target increases damage slightly, stacking up to 5 times.
SuperiorReloading this weapon when the magazine is empty overflows the magazine by a massive amount.621cr
Sucker Punch2 RARITIES
StandardSlightly increases the damage of your next melee attack after dealing damage with this weapon.23cr
EnhancedModerately increases the damage of your next melee attack after dealing damage with this weapon.69cr
Swarm Directive2 RARITIES
DeluxeHitting multiple enemies in quick succession temporarily increases fire rate.
SuperiorPrecision eliminations with this weapon spawn a large amount of flechette seekers that heal allies.621cr
Testament
SuperiorAiming down sights for a short duration increases this weapon's range and aim assist.621cr
Torch Bug3 RARITIES
StandardEliminating a hostile causes them to explode.23cr
DeluxeKills with this weapon leave a brief fire patch that damages enemies who walk through it.
SuperiorItem slightly improves the reload time of all weapons.621cr
Trigger Discipline2 RARITIES
StandardGrants a small amount of increased accuracy for the first few rounds of a trigger pull.23cr
EnhancedGrants a moderate amount of increased accuracy for the first few rounds of a trigger pull.69cr
Urgent Care Chip
SuperiorKills or downs with this weapon while missing health grant a stacking bonus to Self-Repair speed until you return to full health. Scales with rarity tier.