It's free. Ha ha. Link to download is here . It's a 3-D modeling software. Pretty cool. But like most 3-D software you need to find a guide to learn how it works. Google already has plenty of nice tutorial videos. Within an hour a knew enough to get started. It's very simple and easy to learn. A link to the list of tutorials here . There models work with Unity. You have to export them as a 3D model. Default file format is the extension .dae. Heres something I came up with in 5 minutes playing around with:
Learn to create games, a blog at a time.