Hi and thanks a lot, glad you liked it so much!
As to the fullscreen toggle issue, were you playing on Windows with the default configuration? If that's the case, would you mind following a couple of troubleshooting steps to see if we can spot the problem?
- Run winsetup.exe, tick the "Run in windowed mode" box, and click "Save and run". The game should start in a window; see if you can toggle now between windowed and fullscreen modes using Alt+Enter (don't press them both at the same time: try pressing Alt, and while keeping it pressed, press Enter.)
- If this does not work, quit the game and run winsetup once more. Untick the windowed mode box again, select the OpenGL graphics driver, and "Save and run". Does the toggle work now?
Thanks in advance for your help!