Key PointsUnity is the leading platform creating interactive, real-time 3D content.71% of the top 1,000 mobile games were built with Unity.Unity has grown revenue at 41% annually over the last two years.Since going public last September, Unity Software (NYSE:U) has already been a rewarding investment. Despite falling 23% from its 52-week high, the stock has still rocketed 94% higher in just under a year.Even so, now looks like a good time to add Unity to your portfolio. Its business plays into several key trends -- video games, augment and virtual reality, and artificial intelligence -- and I believe the stock price could easily triple in the next five years.Here's why.Unity has a big market opportunityUnity is a software company. Its platform allows clients to create, run, and monetize in