Inside the event menu, you'll see the community progress, the material donation panel, and how many Merits you've earned so far. From here, you can repeatedly donate materials in order to ARC Raiders Coins help fund the construction project tied to Stella Montis.

The interface is straightforward and easy to follow, and you can contribute as many times as you want-provided you have the materials.

What Materials Can You Donate

Each contribution consists of a batch of five materials, and the game accepts a range of common crafting resources:

Metal Parts

Fabric

Plastic Parts

Rubber Parts

Chemicals

These are all items players normally gather while scavenging, looting containers, dismantling ARCR Items, or clearing zones of ARC activity. Since they are everyday materials needed for crafting and upgrading, you likely already have a healthy supply lying in your stash.

There's no preferred material or weighted contribution-five of anything counts as a valid donation, regardless of rarity or in-game value. That means players can donate whatever they're comfortable parting with. If you're overloaded with Metal Parts, go with those. If you'd rather use chemicals you aren't planning to craft with, that works too.

How Contributions Help Unlock Stella Montis

For every batch of materials you donate, the global community project advances. This means your individual contribution-no matter how small-helps every ARC Raider worldwide move closer to unlocking the new map.

The progress is shared across the entire player base, not tracked separately per account. Once the collective goal is reached, Stella Montis will unlock for ARC Raiders Coins for sale everyone during the next event phase.