When it comes to games, one of the latest and most popular is Battlefield 3 by Electronic Arts. The Core i7-4770K's Hyper-Threading Technology allowed it to perform better than the Core i5-4670K without it.
Metro Last Light
Metro seems to be more GPU dependent than Battlefield 3, which results in a smaller difference between the two processors.
League of Legends
League of Legends is the most popular MOBA right now, which is why we chose to include it. Unfortunately, there is not much of a performance difference between the two CPUs.