Try opening the game again, it can sometimes get stuck while opening.
If the problem persists, try the Web version, I'm posting the instructions in this comment:
- Download the .zip file (glass-jungle.zip).
- Extract the executable and the .pck file into the same folder.
- Enter the page gotm.io.
- Press the Upload button (top right corner, cloud icon with arrow).
- Drop the .pck file into the dialog.
- Wait for the game to load and play!