Hmm, thanks for feedback, would love to hear more details as I had only two play-testers and this includes me :D Basically it is meant to play in browser on desktop computer and you just drag parts using mouse (need to keep left click while dragging). Each part have one or more 'screw holes' and when they align there is green circle indicator. Perhaps video that is on page might help. For 1st level you need just to connect two parts: motor wheel + chassis beam and click deploy.