I'm very excited to play the beta and help spread the word, as well as help with any bug squashing. As it turns out, I've already broken the build I just downloaded! So I'm on a Mac, a Macbook Air, and I just downloaded the beta from itch.io. I unzipped the file and opened the app file. I'm a Unity dev, so I recognized Unity's Configuration window for setting up your resolution and graphics quality before starting the game. I selected 1024x768 and Fastest, then hit Play. The game opened fullscreen, the Large Visible Machine logo popped up, faded out, and the Start Screen faded in. I selected Campaign mode, which took me to to the Campaign screen, where Admiral Ivar's Campaign is the only one unlocked. But when I hit Play Scenario, nothing happens! So I tried pressing some other buttons on that screen, the Mission 1 button populates the Mission panel with new text about the mission, but the Play Scenario still doesn't work. Then I tried X'ing out of the Campaign screen to try multiplayer, but the X button doesn't work either. I tried this same process 3 times, with the same results. Hope this helps.