Good afternoon! It took some time to resolve this issue. If you see the window for 0.5 seconds, it means that it closes automatically. I suggest two solutions:
Press Shift+G not when you enter the menu, but when you have finished loading the game after the “slutcraft ver. 0.49.1” splash banner. Then you “should” see a screen with hotkeys, and immediately after loading, press Shift+G.
There is also another option if the first one doesn't work. Close the game, hold down the Shift key, and double-click the shortcut to open the game. Hold down Shift while the game is launching, and immediately after the loading is complete, you will see the same engine settings screen.
