It's unusable in the phone, but it's fine in the notebook. Are you using a library to handle the buildings/cards?

If I zoom out, it's very difficult to read the text. Some slots have tooltips like "effort/drone". It would be nice to add big tooltips to all slots. Also the cards just say "drag to collect", but I'd prefer something like "Water. Drag to collect".

The Drones and the Blueprint for drones have the same color and are somewhat confusing.

Only the Solar Array can be constructed multiple times. I'd like to build many copies of each building, amusing you decrease the production rate, so there are more trade off, like wasting time/resources building another copy of the Ice mine or waiting more time for each piece of ice.

It's weird that the survivor produces "effort". I expected something similar to a drone that can be only in one place. But making the change I propose would make the initial part more boring, so I guess it's a bad idea.

No Helium3 fusion reactor. :( [1]

What about alien artifacts in the regolith? Just as a joke, no use in the game.

[1] There was a game in the 2000 about a Moon Station, and one of the first steps was to build a robot to harvest Helium3 for a fusion reactor. I don't remember the name. No problem if you don't include it.