It's very important to save up your items for your Triple Sky Castle build. Crystals and boxes are very important items to have saved up. Also remember you can leave the city you are working on at any time and head back to the hub, from there you can play other maps. This is important since you can restock the store this way (the store is "global").

The map this guide assumes you are playing on is Peaceful Village.

One small tip for building huts: Use your bushes, trees, and huts as soon as you can without messing up your strategy. If you know you really need to save a particular item because you're getting boxed in, that's fine, but otherwise use those items up. That "bank" slot in the corner should have grass in it most of the time. Crystals are the noteable exception, you can save those for when you need it, though if you have any boxes consider using those.

Here is a example build order for a triple sky castle. Remember build orders are tentative because sometimes things happen outside your control and you need to adjust. Learning to adjust to your general building plans is crucial to building a mega sky castle.

Assume the "bank" slot is grid space A1, the bottom left corner is A5, the bottom right corner is E5, and the top right corner is E1.

C5, C4, C3~, D5, D4, D3~, B3*
D5, D4, D3~, E5, E4, E3~, C3*, B2^
C5, C4, C3~, D5, D4, D3~, B3*
D5, D4, D3~, E5, E4, E3~, C3*, C2^, B1^
C5, C4, C3~, D5, D4, D3~, B3*
D5, D4, D3~, E5, E4, E3~, C3*, B2^
C5, C4, C3~, D5, D4, D3~, B3*
D5, D4, D3~, E5, E4, E3~, C3*, C2^, C1^
D5, D4, D3~, C5, C4, C3~, E3*
C5, C4, C3~, B5, B4, B3~, D3*, E2^
D5, D4, D3~, C5, C4, C3~, E3*
C5, C4, C3~, B5, B4, B3~, D3*, D2^, D1^, E1^
^ Visual representation of one sky towers build order

Notes:

~ means that you can use a crystal, but it's very preferable to just build a hut.

* means that if a crystal is readily available consider using it, but you can build three more huts if you feel confident

^ means you should use a crystal, even if it means waiting until you get one (resetting the stores stock on another map is a good way to get a crystal)

For all other mentioned cell spots, you're just building a hut in that spot.

Using my first line as an example: C5, C4, C3~, D5, D4, D3~, B3*

At C5 and C4 you build huts, at C3 you should try to build a hut. Repeat this process on cell spots D5, D4, and D3. Then finally you use a crystal at B3 to make a mansion.