LowPolis is still in early access. For this reason it may still have some errors stopping you from playing. If you have any issue with running the game you can ask here. Developers will try to help you. 

To make solving technical issues easier for us all follow these rules:

• Check FAQ first. There is a chance that your issue is so common we have decided to put it in the FAQ.
• Browse through Technical help for posts on similar issues. There is a high chance that a problem similar to yours has already been mentioned.
• Try to attach Player.log, screenshots or a video as it lets us understand your problem better.

How to find log files and saved games?

On Windows saved games and log files are there:

C:\Users\ [UserName]\AppData\LocalLow\BroWar Collective\LowPolis

On Linux saved games and log files are under:

~/.config/unity3d/BroWar Collective/LowPolis

On macOS you’ll find files under these:

Logs: ~/Library/Logs/BroWar Collective/LowPolis    
Saves:  ~/Library/Application Support/BroWar Collective/LowPolis

Keep in mind that AppData (Windows) and Library (macOS) folders might be hidden in your file browser.