On that far right of the screen you have rectangular icons that you can press to add logic blocks.You can watch the video listen here to see how it can be played.
Decided to try and download and it works that way, but in the browser (Firefox) it does not
Hmm, that's odd. I use firefox myself. Other than the 30FPS limitation and a minimal screen resolution of 1280x768 it should work completely fine.
Now seems to be working fine :)Maybe one of those floating bugs
