so, here I was earlier today, screwing around on an old laptop i installed Linux on, just seeing what software i could get to run on it..
opened up a game in it and i got the famous "press any key" sign at the main menu..


which got me thinking, every time i get an "any key" display, i always use the same key, the space bar..



so it made me wonder, what is your default "Any Key"?

I press either space or enter.

Space or enter for me.