cant get past difficulty selection

[om3ga6400]

no matter what I press I cant move on this page might be because I'm on chrome book

[hugobuddel]

FWIW, I had to press 'z', after selecting the 'Type here for keyboard controls'-field, but this is using chromium under Linux. I suppose you already tried that, so this message is to confirm that passing the difficulty selection does work on other systems. Also, I had trouble figuring it out, even though the instructions are right there on the pdf, so maybe this comment helps someone else.

Edit: also, thanks for the game! managed to finish e1m1. I think I could only do so because I know the map by heart though. Pretty cool that it is playable at all, well done.