In Once Human, mods are essential if you want to amplify your damage, fine-tune your gear, and fully optimize your build. Whether you’re chasing endgame efficiency or just want to understand how to maximize your equipment, this guide breaks down what mods are, how they work, and where you can get the best ones. You’ll also learn about suffixes, upgrade rules, and where to hunt for high-tier modifiers—including those elusive gold and lunar suffix mods.

What Are Mods?

Mods are upgrade components that slot into weapons and armor, giving you powerful bonuses to stats like elemental damage, crit, or survivability. They come in five rarities:

• Gray (Common)
• Green (Uncommon)
• Blue (Rare)
• Purple (Epic)
• Gold (Legendary)

Mods can only be equipped in their respective gear: weapon mods only fit into weapons, and armor mods only fit into armor. Each armor slot supports different types of mod effects:

• Masks: Keyword-specific mods (e.g., Burn, Frost Vortex)
• Helmets, Pants, Boots, Gloves: Generic damage-boosting mods
• Tops (Chest Armor): All defensive mods

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Keyword Mod Associations

Gold weapon mods are tied to specific weapon keywords. For example:

• Burn keyword mods enhance burn weapons.
• Power Surge mods work with power surge gear.
• Frost Vortex mods are only for frost-based weapons.

Using mods that match your weapon’s keyword ensures you get the right bonus scaling. Masks are the only armor slot that accept keyword-specific mods—other armor slots stick to general damage modifiers.

Mod Suffixes and Attributes

Mods can come with suffixes that dictate their fixed and potential substats. Common suffixes include:

• Violent: Grants Critical Damage Bonus
• Precision: Grants Weak Spot Damage Bonus
• Talent: Grants Elemental Damage Bonus

Mods can also have linked attributes (synergistic secondary stats) or general attributes (more flexible bonuses). Typically, mods can roll up to two linked or general attributes, and gold mods are where this potential truly shines.

You can explore suffix options in-game by visiting the Mod Conversion menu. Hover over a mod (like Quick Toss) and press X to view all available suffixes and their effects.

Mod Upgrading System

Mods can be upgraded using:

• Weapon Mod Parts for weapon mods
• Gear Mod Parts for armor mods

You can earn these parts by:

• Completing dungeons
• Opening mod boxes
• Disassembling unwanted mods at the Disassembly Bench

Upgrade rules by rarity:

• Gold mods: Upgradable 5 times (max 3 gold substats)
• Purple mods: 4 upgrades
• Blue/Green mods: 1 upgrade
• Gray mods: No upgrades

Each upgrade boosts a random substat by one level (1–5), represented as:

• Level 1 – Gray
• Level 2 – Green
• Level 3 – Blue
• Level 4 – Purple
• Level 5 – Gold

How to Farm Mods

There are multiple ways to obtain mods, each with varying quality based on region and method:

1. Crates Across the Map

• Dayton Wetlands: Yields blue mods
• Broken Delta: Yields purple mods
• Red Sands: Chance to drop gold mods

Note: Mods from crates do not have suffixes.

2. Silos and Monoliths

• Silos drop armor mods
• Monoliths drop weapon mods

Difficulty affects drop quality:

• Hard Mode: Chance for gold mods
• Pro Mode: Gold mods guaranteed with purple substats
• Nightmare Mode: Guaranteed legendary mods, starting at level 9

These activities are the best way to farm suffix-equipped, high-level mods outside of special events.

3. Public Crisis Events

To get keyword suffix mods, the only current method is via mod boxes from Public Crisis Events. These events spawn randomly throughout the day and vary by world. To track them:

• Open Stardust Chronicles > World Exploration
• If you’re in a Manabus server, focus on the first five Public Crisis events listed—these are the most likely to appear
• Look for the High Risk label—these offer better mod box drops

You can also world-hop to check event status by:

• Using a teleporter
• Swapping to another world in your server
• Press X to check ongoing events on the map

4. Lunar Suffix Mods

These powerful mods are only available through Lunar Oracle servers during special Lunar events. You can obtain them by:

• Opening 75 or 120 Whisper Crates
• Farming Lunar Spawns, which always drop gold mod crates and reappear in the same location every spawn cycle

These Lunar suffix mods are rare but often make a key difference in high-end builds.

Final Tips

If you’re unsure which mods to keep, prioritize golds with strong substats and good suffixes. Use low-rarity mods to disassemble and stockpile upgrade materials. Stay on top of world events and keep checking silos and monoliths as they rotate in availability.

Mods are more than just enhancements—they’re essential for high-performance builds in Once Human. Learn the suffixes, target the right locations, and don’t neglect mod upgrades. The right setup can completely transform your gameplay experience.

Stay sharp, farm smart, and may your next drop be triple gold.