Mach Studio Pro v2 is a 3D production and rendering app for Windows. Which basically means that, having created your animation and specified where the light is coming from, the program adjusts every frame of your movie to create the desired effects. OK, it actually does a lot more than that, but you get the basic idea.
Typically, such programs are used in big-budget productions on very powerful computers. Which is why the software itself is rarely cheap. Until now.
Studio GPU, the company behind Mach Studio Pro, has decided that it wants to "shake up the market". And so, a couple of weeks ago, it reduced the price of its product from $3,999 to $0. Yup, the full program is now freeware.
While it's tempting to try out the program for the sheer fun of playing with something that used to cost $4,000, be aware that you'll need a pretty fast PC and graphics card to make the most of it. And with the download running to some 504 MB, you'll need an internet connection that can cope.