Astral Towers game now works natively on both Linux and Windows. This is because Linux support was added to the Apus Game Engine - the engine powered Astral Towers game. The game source code is available to all engine's patrons on Patreon: https://www.patreon.com/ApusGameEngine. So you can become a patron and build the game from source :-) It can be compiled with either Delphi Community Edition or Lazarus / FPC (both are free) for Linux or Windows. The engine itself is open source and available at GitHub.