What will you be doing with this PC? Be as specific as possible, and include specific games or programs you will be using.

Gaming (Including Modded Games) (Fallout 4, GTA V, Gears of War)

Some Unreal Engine 4 Development

What is your maximum budget before rebates/shipping/taxes?

$1000-1200 on the PC $300-500 for Mouse, Keyboard and Monitor

When do you plan on building/buying the PC? Note: beyond a week or two from today means any build you receive will be out of date when you want to buy.

Soon, just getting opinions and a basic guide for now

What, exactly, do you need included in the budget? (Tower/OS/monitor/keyboard/mouse/etc)

Everything apart from OS

Which country (and state/province) will you be purchasing the parts in? If you're in US, do you have access to a Microcenter location?

Perth, Western Australia

If reusing any parts (including monitor(s)/keyboard/mouse/etc), what parts will you be reusing? Brands and models are appreciated.

N/A

Will you be overclocking? If yes, are you interested in overclocking right away, or down the line? CPU and/or GPU?

No

Are there any specific features or items you want/need in the build? (ex: SSD, large amount of storage or a RAID setup, CUDA or OpenCL support, etc)

Small SSD for Windows HDD for storage

Do you have any specific case preferences (Size like ITX/microATX/mid-tower/full-tower, styles, colors, window or not, LED lighting, etc), or a particular color theme preference for the components?

I don't want anything flashy on the case, no lights or colours. Just plain and unassuming with good air flow. The smaller the better.

Do you need a copy of Windows 7 or 8.1 included in the budget? If you do need one included, do you have a preference for one or the other?

No but I am open to opinions on either OS

Extra info or particulars:

Nothing really particular too add, haven't built a PC in years but now Fallout 4 is coming, I'd love to be able to mod it a bit and have some fun playing and building PC games.