itch.io

A similar question question was asked below, so I'll just copy-paste that response, and hope it helps you too:

It should work on both, but might need extra steps, like granting execution permissions to the core files using the chmod command. From what I gathered, you type chmod then a+x followed by a space, then drag the DDKK files into the Terminal window and press Enter. I'm not 100% on the steps because I am a Windows user, unfortunately.

Here's also a video tutorial for Mac opening up Ikeman_Go on Mac, but should be similar steps for DDKK and Linux:

https://www.dailymotion.com/video/x9x0cbs

Can't promise it'll work, but hopefully worth giving it a shot.