:D it worked with Space
I have Alienware 15 R3(1980x1080 screen) and I'm using the built-in keyboard. I can able to navigate up and down(play and quit) but can't select it. For selecting I tried "Enter Key" and "Left Mouse Button". And tried pressing all the alphabet keys.
I opened it in Ubuntu(Kubuntu) but Play and Quit button is not doing anything.