I'm building a gaming rig are these good parts?

CPU: Intel Pentium G3420 3.2 ghz
GPU: EVGA GTX 750 Ti 2GDDR5
RAM: 8GB Kingston HyperX Blue 1600mhz
Mobo: Asus H85M-A
PSU: Corsair 500W Builder Series
HDD: WD 500GB 7200RPM

I plan to play games like Battelefield 4, Titanfall, Call Of Duty, Minecraft, Rust, and DayZ.

That is only a dual core processor.
A 1TB hard drive is only about $10-$15 more than a 500 gig drive.
You will save a lot of money in electricity if you get a power supply that is 80+ Bronze or better certified.
I suggest going for an AMD FX processor and an AMD 990FX chipset motherboard. It will perform better than an Intel motherboard/chipset at the same price. With comparable AMD and Intel combos, AMD combos are about 30% less than their intel compeitors.