Did you enjoy setting up series of dominos just to see them fall? Does seeing a set of marbles running down a track sound like fun to you? Then... gadgeteer will likely be "your thing"! Building dominos, seeing them branch out etc. is nice, but setting hundreds of domino stones up, just to see them fall in a minute or so gets tired quickly. here, of course, all you do is press a button and all dominos are standing again, leaving time to make more corrections and additions. A missing feature is having the rails for balls aligning automatically. There are enough click or magnetic systems in the real world, why should we go for less in the virtual world? Also there is no ball machine, delivering balls at a set rate, for instance to build ball clocks. but the developers are enthusiastic and active... more stuff to come, I am sure!