Leadwerks Game Engine is the easiest way to build 3D games. With a rapid development pipeline, support for Lua and C++ programming, and plenty of learning materials, Leadwerks is the perfect way to learn to make games.
I have been using the Leadwerks Engine for a few years now, and loved every minute of it. Leadwerks 3.1 is great for beginners all the way to advanced users. Cheap engine to buy and the licensing terms are very reasonable. Bugs are fixed in a timely manner and questions of the forums generally go answered. I highly recommend this engine.