Overlapping Buildings  

This is a separate program that disables the in-game check for building overlapping. Now you can build buildings that overlap each other and even staircases and walls that partially sink into the ground. Made with cheat engine. The mod is provided as a separate .exe file generated by Cheat Engine, so some antivirus software might incorrectly detect it as a virus. If you're worried, you can download the cheat table itself. For the cheat table you will need to install Cheat Engine (https://www.cheatengine.org/), but if you use a standalone version, you do NOT need to install Cheat Engine.

Instructions

• Start the game
• Start the mod - it can be placed anywhere, there is no need to copy it into the game directory
• Press F8 to activate. If everything worked fine, you should hear a sound and the text in the mod should become red:
  
• Enjoy!

Not tested in multiplayer, but it has been reported by other people in the comments to work.