The Alters: How to build a rapidium ark?

Rapidium arks are unique structures in The Alters, which are linked to the main storyline and the achievements Provide More, We Needed That, The Mission Comes First, and Exceed All Expectations. On this page, you will learn how many rapidium arks can be constructed and whether you can get any profits from them.

• How to create the first rapidium ark?
• How many rapidium arks can be built and is it profitable?

How to create the first rapidium ark?

1. You will learn that you have to build the first rapidium ark during act 1. Maxwell will ask you for building it during one of the phone calls from Earth. This will unlock the related main task. This happes in the first act.

1. You can commission the construction of the rapidium ark by visiting the command center at the base. To build it, you need 30 metals, 120 rapidium and 100 organics. Each rapidium ark also occupies 8 slots (4 in each row) and increases the base mass by 32 units.

1. The biggest problem is, of course, the requirement to gather 120 units of rapidium. Find and scan the deep deposit of rapidium, which you will find in the central part of the map in the first act - the attached images show this place. You can build a Mining Outpost there. Relying on shallow rapidium deposits in this case may be insufficient.

How many rapidium arks can be built and is it profitable?

1. Constructing the first ark will not ultimately solve the problem, because Lucas may ask you to build more rapidium arks. These will be optional tasks and the first one is called Is One Enough?.

Building additional rapidium arcs is not profitable in terms of base operation. They won't replace your warehouses in storing rapidium. Moreover, each ark will increase the mass of the base, forcing you to gather more organics for the next journey.

Building a rapidium ark only serves to complete optional quests assigned by Lucas. Call Lucas after constructing an ark - he will ask you for another one. There are trophies and achievements associated with arks:

1. Provide More - a trophy for building 2 arks;
2. We Needed That - a trophy for building 3 arks;
3. The Mission Comes First - a trophy for building 4 arks;
4. Exceed All Expectations - a trophy for building all 5 arks.

See also:

1. Game guide
2. Base layout and the best rooms
3. How to extract rapidium?

The Alters

June 13, 2025

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