Link.
It's incredible machines in a factory, many cool things like an elevator or a pushing machine, hours of fun to be had.
It's a small game, but it's fun nonetheless. How the blocks work is for you to figure out, but it's distinct quality overall is charming.
Either to push number boxes or to destroy things in your way, Rubicon is pretty fun itself.
Oh yeah, and you can save user-made levels, too.
