Game over, so to speak Crossword Clue

 The answer to the crossword clue "Game over, so to speak" is CURTAINS.

This is a pun on the phrase "curtains down", which is used to indicate the end of a performance. In the context of a game, it can be used to mean that the game is over and the player has lost.

The clue is a bit of wordplay, as the word "curtains" can also refer to the physical curtains that are used to close off a stage or a room. So, the clue is saying that the game is over and the player has been "shut out".

I hope this helps! Let me know if you have any other questions.