Marathon Currencies: Credits, Silk & Salvage

In the game Marathon, the three currencies—credits, silk, and salvage—are not interchangeable. Credits are the standard mission currency, silk is a premium resource, and salvage is a crafting material. This article explains how each is earned, spent, and valued, and answers common questions about them.

Formula

Each currency is calculated by multiplying the time spent (in hours) by the respective earning rate per hour:

Total Credits = Time (hours) × Credits per hour
Total Silk = Time (hours) × Silk per hour
Total Salvage = Time (hours) × Salvage per hour

Where:

• Time (t) – total hours played, in hours (h)
• Credits per hour (c) – average credits earned each hour, in credits/h
• Silk per hour (s) – average silk earned each hour, in silk/h
• Salvage per hour (v) – average salvage earned each hour, in salvage/h

Worked Example

Using the default values from the calculator (10 hours, 100 credits/h, 5 silk/h, 20 salvage/h):

1. Credits: 10 × 100 = 1,000 credits
2. Silk: 10 × 5 = 50 silk
3. Salvage: 10 × 20 = 200 salvage

The calculator shows the same results: 1,000 credits, 50 silk, and 200 salvage.

Background: Where Do These Currencies Come From?

The terms “credits,� “silk,� and “salvage� are common in sci-fi and fantasy games, but in Marathon (the Bungie franchise that preceded Halo), they are not all native. The original Marathon trilogy (1994–1996) used a simple resource system: you picked up ammunition, grenades, and health. There were no currencies. The modern usage comes from fan remakes, community mods, or spin-off projects that grafted RPG mechanics onto the classic engine. In those adaptations, credits are the main money, silk is a rare trade good (often tied to alien artifacts), and salvage is broken-down tech you collect from enemies and wreckage.

This calculator is designed for players of those modded versions who want to estimate their earnings over a play session. It assumes you know your average hourly rates, which you can track manually or with a stopwatch.

How Each Currency Works

Credits are the workhorse currency. You earn them from completing objectives, killing enemies, and finding caches. They are used for buying standard gear: weapons, ammunition, medkits, and basic upgrades. Credits are abundant but not unlimited—you’ll often grind for a big purchase.

Silk is a premium currency. It’s rarer, often found in specific hidden rooms or as a rare drop from elite enemies. Silk is used for exclusive items: unique weapons, cosmetic skins, or unlocking special missions. Because it’s scarce, players hoard it and spend it only on high-value items.

Salvage is the crafting material. You get it from breaking down unwanted gear, looting containers, or stripping wrecked vehicles. Salvage is used to repair equipment, craft consumables, or upgrade weapon mods. It’s the most flexible currency because you can always get more by dismantling things you don’t need.

How to Choose What to Farm

Your farming strategy depends on your goal. If you need a specific weapon that costs credits, focus on missions with high credit payouts. If you’re saving for a silk-exclusive item, you need to hunt rare spawns or explore secret areas. If you want to upgrade your gear, salvage is your priority—dismantle everything you don’t use.

Here’s a quick guide:

• Need credits fast? Run short, repeatable missions with high objective rewards.
• Need silk? Check the map for hidden areas or farm elite enemies that have a chance to drop it.
• Need salvage? Loot every container and break down all spare weapons and armor.

Balance your time: don’t spend an hour hunting silk if you only need 50 credits for a basic medkit.

Common Problems and Misconceptions

One common mistake is assuming all currencies are worth the same. They are not. A single silk is often worth more than 100 credits in trade value, but you can’t directly convert them. Another issue is overestimating hourly rates—if you die a lot or spend time managing inventory, your actual earning rate drops.

Players also confuse “salvage� with “scrap.� In some mods they are the same, but in others, scrap is a separate low-tier material. Always check the mod’s documentation. Finally, don’t hoard credits “just in case�—in most versions, credits have no interest and inflation isn’t a thing, so spending them on useful gear is better than sitting on a pile.

Comparison: Credits vs. Silk vs. Salvage

Currency	Rarity	Primary Use	How to Get
Credits	Common	Buy standard gear	Missions, kills, caches
Silk	Rare	Exclusive items, cosmetics	Hidden areas, elite drops
Salvage	Uncommon	Crafting, repairs, upgrades	Dismantling, loot containers

In practice, credits are the most liquid, silk is the most valuable per unit, and salvage is the most versatile. If you’re a completionist, you’ll need all three, but your time is best spent on the one that’s bottlenecking your progress.

Costs and Value: What Things Actually Cost

Typical prices in modded Marathon games (values vary by mod):

• Basic weapon (pistol): 200–500 credits
• Medkit: 50–100 credits
• Rare alien weapon: 5–10 silk
• Weapon upgrade (per mod): 50–150 salvage

These are rough examples. Always check the in-game shop or menu for exact prices. The calculator above helps you plan how long you need to farm to reach a target amount. For instance, if you need 2,000 credits and earn 100 per hour, you need 20 hours—but you can speed that up by choosing higher-paying missions.

Alternatives and Tips

If you’re tired of grinding, consider trading with other players (if the mod supports it). You can often exchange salvage for credits at a poor rate, but it’s better than nothing. Some mods also have a “daily bonus� that gives a lump sum of credits or silk—log in every day to claim it.

Another tip: prioritize missions that reward multiple currencies at once. A mission that gives 500 credits and 20 salvage is better than one that gives 600 credits but no salvage, if you need both. Also, don’t ignore side objectives—they often grant bonus silk or salvage.

Frequently Asked Questions

Can I convert silk to credits? Usually no. Most mods don’t allow direct conversion. You can only use silk for silk-exclusive items. Some mods have a black market vendor, but the exchange rate is terrible (like 1 silk for 50 credits), so it’s rarely worth it.

What’s the best way to get salvage fast? Break down every weapon and armor piece you don’t use. Also, loot every crate and container you see—they often contain salvage. If you’re in a vehicle-heavy level, strip the wrecks.

Are credits shared between characters? In most mods, no. Each character has their own wallet. However, some mods have a shared stash for salvage and crafting materials. Check your mod’s settings.

Why is silk so rare? Silk is designed to be a premium currency to reward exploration and difficult content. It’s intentionally scarce to make exclusive items feel special. If you’re not finding any, you’re probably not exploring hidden areas or killing elite enemies.

Does the calculator work for real money? No, this is purely for in-game currencies. It won’t help you convert to USD or any real-world currency.

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in t | Total time (hours) | h | 10 | 0 | 1000
in c | Credits earned per hour | credits/h | 100 | 0 | 10000
in s | Silk earned per hour | silk/h | 5 | 0 | 1000
in v | Salvage earned per hour | salvage/h | 20 | 0 | 10000
out cred | Total credits | credits | t * c | 0
out sil | Total silk | silk | t * s | 0
out salv | Total salvage | salvage | t * v | 0