Anyway Opus Magnum is IMO well-named and truly Zachtronics' magnum opus and if you haven't played the base game, you have to check it out!
Now excuse me while I try the DLC
@rygorous I split the Zachtronics oeuvre into "games about machines and games about programs" and Opus Magnum is the best of their games about machines and the best overall.
I give the nod to EXAPUNKS for the games about programs. It's the only one with a solid enough programming model to not feel like a dumb stunt but a weird enough one to not feel like I'm doing work.
@mcmartin Don't care about this story in TIS at all. But it has by far the most interesting (and interestingly abusable) programming model of his games. (Mostly due to a single instruction that I won't get into.) It also has the most interesting puzzles.
Exapunks OTOH is pretty much a one trick pony, and I don't find it a very interesting trick.