With the new generation consoles being released there are always new tech for rendering and optimising games for the consoles.
Many companies use their proprietary game engines, but as multi platform engines gets better and better they get used more and more. And with the mobile platform getting more complex and more powerful, many game engines have started to support mobile devices.
Some of these engines are
With these engines out the leap from mobile to console/PC will for gaming companies will decrease.
With the gaming industry maturing, the question is will the market get bloated with clones of successful games or will we see new types of genreas growing. Will games get bad ports to different platforms or will developers find the best ways of using each platform for different genreas?