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Complex SKY is a city/factory building simulator with some strategy and puzzle elements developed by a sole developer "me", where players build the city up in the very sci-fi sky surrounded by floating islands. While building upward or FLIP the entire building and build it downward is possible and also have deep and complex materials crafting chain and a ton of technologies to discover and many more features for players to take advantage of.


Use vertical space as your advantage

Build a city in the sky land surrounded by floating island


Every building has a unique placement and mechanic build into it

Production and Automation

There are a lot of building materials so automate production is a way to go

Research new Technologies

Every technology will have cost so it needs research lab to deserialize those materials to make progress. Technology is the main progression in the game while also improve many aspects of the city

Population and Workforce

Factory need workforce to run so take care of population and maintain the difference class of population

Item Logistic

Move item between building to building, player can custom what item to send between building, some building may have a unique way to transport item

Environment Restoration

Restore the environment to repopulate trees around floating island, also increase how many mineral miners can mine from mineral deposit without penalty

City Resources

  • MASS floating city needs some kind of engine to hold it together
  • POLLUTION like it name, too much, people will die and will affect the progress of environmental restoration
  • CITY CONTROLLER building have many moving parts so the overall processing power of the city needs to match

and many more as the game progress

Game Mode

  • SANDBOX build as much as you want, everything is free after all
  • CHALLENGE recommended way to play Complex SKY every building and technology will need materials to build or research

Quality of Life

Complex SKY is packed with tool and keyboard shortcut to help players play the game easier

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Hi, I'm a sole developer of Complex SKY
A vertical automation floating flippable city/factory building in the sky
This is the first DevLog of me working on the game. I don't know how frequently the DevLog will maybe range for a few weeks to a month. It depends on my current workload and etc. etc.

Here is some backstory for the game. I was working on this game for almost 4 years and I have programming, 3d art, 2d art experiences as old as my game. I know how to program since 11 but at that time I didn't take it seriously, I can say I'm fairly new to this industry. Currently I started looking into marketing and that was very hard to get people into the thing I made. I am looking forward to making a new gameplay trailer that shows cool stuff in the game.

Demo is coming
The demo version of the game hasn't been in my plan since I started, so to implement the demo version it may take some time and I am working in parallel with a new gameplay trailer so it takes ever more time. The demo version will show some of the general concepts of the game like how to build a building in sky land, how to setup a factory to automate production items, how to setup item transport routes between buildings, how to automate research technology and how population system work in game. What the difference between demo and alpha version, the demo version will contain less game content to fit into around 1 hour of play time but have more new features. and it marks the end of an alpha version.

anyway don't forget to join Discord Server to talk with the dev, talk with others, report bug(s), suggestions and any feedback is welcome. The next DevLog will be how do I get a game idea or maybe something else that comes to my mind at that time. The Early Access will be available around Q4 2021 so wishlist and follow for future update.

Complex SKY demo on Steam is coming

Complex SKY demo on Steam is coming


I just working on Complex SKY demo version it will take sometime not long let's see how demo will play out

Complex SKY now on IndieDB

Complex SKY now on IndieDB


Complex SKY is a vertical, automation, floating, flippable city-building in the sky.


This looks really cool, keep it up.

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Complex SKY
Developer & Publisher
Complex Blue Studio
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Release date
Game watch
Single Player

Latest tweets from @cpskyproject

I'm busy working on the Demo version of the game in the last 2 weeks here is #screenshotsaturday in the demo versio… T.co

Apr 10 2021

RT @paulriehle: Hey, I'm Paul 👋 I create #voxelart worlds. #OriginalContentArtist T.co

Apr 7 2021

Hey everyone checkout Complex SKY at facebook Facebook.com Also Discord server as well… T.co

Apr 7 2021

RT @3BitUK: Say hello to Complex Sky, the City Building Sim, with a twist. Developed by @CPSKYProject

Apr 5 2021

RT @MadMaraca: Hey #VisibleWomen I'm Mari and I love everything isometric. ^^ T.co

Mar 30 2021

RT @serena_drawing: Three types of tree🏞️🌲🌳🌴 #Blender3d #lowpoly #treelowpoly #modelling #3dmodeling #gamedesign T.co

Mar 28 2021

RT @LinuxFlips: 🐱 Cat 1: #Linux 🐱 Cat 2: #macOS 🐱 Cat 3: #Windows10 sudo 🔄🔄 apt ♥️♥️ T.co

Mar 28 2021

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