I know you asked this a year+ back, but just in case someone else searches for the same in the future- here are the steps to making the Linux version work:
- Download the Windows build which is about 15+ Gb at the time of writing
- Download the Linux build which is about 30+ Mb at the time of writing
- Extract and Merge both by dropping contents of the Linux build directly into the Windows one
- Double click start.sh file to run the game
If by chance start.sh is unresponsive, double check permissions on start.sh file. It should be allowed to "Run as Program".