Unfortunately, the Intel Game Bundle site doesn't contain a lot of details so we don't have firm confirmation which chips qualify for the free game bundle. Newegg and NCIX list some Haswell-based Core i7 CPUs that quality for the voucher but it may also be valid for some Core i5 "Skylake" chips:
Intel has not provided specific details about the products that qualify for the game voucher, however, it appears that Newegg and NCIX have a number of Intel Core i7 Haswell processors that include this game voucher. The list includes the high-end i7-5960X and i7-5930K as well as cheap i7-4770 central processing units. You can see the list of processors that have been found to be available with the game voucher on Newegg below, courtesy of LegitReviews. It is worth mentioning that New Zealand-based retailer Playtech is offering the game voucher with Core i5 Skylake processors, so apparently this promotion is not limited to Core i7 chips only.
Intel Core i7-5960X – $1049.99 Intel Core i7-5930K – $584.99 Intel Core i7-5820K – $384.99 Intel Core i7-4930K – $599.99 Intel Core i7-4820K – $329.99 Intel Core i7-4790 – $309.99 Intel Core i7-4790 S – $304.99 Intel Core i7-4771 – $319.99 Intel Core i7-4770 – $304.99 Intel Core i7-4770 S – $305.99
Via: WCCF Tech