I made a mistake in construction. Can I undo it and cancel the building? #
Yes, you can always demolish your constructed buildings, but the money you recover will vary depending on the state of the building. If you decide to demolish the building while it is still under construction, you will recover 100% of the cost. You can do this by inspecting the building and clicking the ‘Cancel construction’ button.

If you decide to demolish the building once it has been inaugurated, you will recover 10% of the cost. You can do this by inspecting the building and pressing the ‘Demolish’ button.

In either case, the space will be vacant and available for construction.
How long does it take to build a building? #
Depending on the type of building, these may take different days to construct:
- Residential: 1 day.
- Agricultural: 2 days
- Energetics: 2 days.
- Ecological: 2 days.
- Productive: 3 days.
What can I do if I run out of space to build? #
There are several options:
- Purchase a land extension from the City Hall. You will immediately gain more space to construct new buildings.
- Upgrade your existing buildings. By doing so, you will optimize space and make your buildings more efficient and sustainable.
- You can demolish any building that does not bring you as much as the new one you build.
Why can’t I build? #
There are several reasons why you cannot build:
- You don’t have enough Keplers.
- You don’t have enough space.
- Your current contamination level exceeds the recommended threshold and is in the black segment of the contamination meter, impeding the construction of any type of building except Ecological.
How can I grow my city faster? #
Here are some tips to get ahead of the rest of the players:
- Check the population needed to get to the next level. Calculate how many residential buildings you need to build or upgrade to reach that level. Build as many agricultural and energy buildings as necessary to match that figure.
- With the money obtained by leveling up, build again with the next population targets in mind.
- Log in daily to collect your daily and weekly rewards.
- Prioritize the construction of business buildings to generate money on a recurring basis. In the medium term, the investment will pay off.
