How's this PC look?

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The build looks great, not only will it play low demand games well, it will also play high demand games (GTA, Shadow of Mordor, etc.) at 40+ FPS at ultra settings. The only suggestion I have is that you may be able to squeeze more performance out of your system if you overclock it, which would require a system like this: http://pcpartpicker.com/p/vT3QrH. If you don't plan to overclock, the build is great.
Made three changes for the sake of performance & reliability.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4590 3.3GHz Quad-Core Processor ($179.99 @ NCIX US)
Motherboard: ASRock H97M PRO4 Micro ATX LGA1150 Motherboard ($69.89 @ OutletPC)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($37.49 @ Newegg)
Storage: Samsung 850 EVO-Series 120GB 2.5" Solid State Drive ($59.00 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.98 @ OutletPC)
Video Card: Sapphire Radeon R9 380 4GB NITRO Dual-X OC Video Card ($189.99 @ Newegg)
Case: Cougar Spike MicroATX Mini Tower Case ($33.99 @ SuperBiiz)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($55.99 @ SuperBiiz)
Total: $676.32
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-12-01 15:42 EST-0500

1.) Go with the H97 PRO4M over the anniversary edition. Much better heatsinks and a better overall quality.

2.) For only a few dollars more we can grab an 850 Evo SSD which will have a much better average speed compared to the Sandisk.

3.) Switched for a same specc'd couple dollars more WD HDD over the Seagate you had selected. Western Digital typically has better warranties, as their failure rate in my experience is much lower.
 
The build looks great, not only will it play low demand games well, it will also play high demand games (GTA, Shadow of Mordor, etc.) at 40+ FPS at ultra settings. The only suggestion I have is that you may be able to squeeze more performance out of your system if you overclock it, which would require a system like this: http://pcpartpicker.com/p/vT3QrH. If you don't plan to overclock, the build is great.
 
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