Game Making

Okay, so have you ever heard of Slender? It's a really friggin scary game featuring the Slender Man. It was made with this game program called Unity, which is used to make games. This gave me the idea to make games with programs such as Multimedia Fusion, or Unity. Of course, you'd need to know how to use them, and that can be a challenge. I'm currently learning how to use Multimedia Fusion, so that I can make my own games. I'm not so sure about if that's the right choice, so I need an opinion. What do you guys think?