The buttons aren't working for me. I tried two different browsers. It's just stuck at the menu screen.
Uh oh, I might be that I haven't made it clear enough. Can you try moving over the buttons with WASD or arrows keys?
I've just added an update showing controls on the main menu. Hopefully that's less confusing now.
Thanks for pointing this out!
That makes it clear now. Interesting concept. I got to the end quite easily so these would work well as starter levels in a longer game with more complicated puzzle solving.
